The ‘Big 4’ supermarkets in the UK – Tesco, Sainsbury’s, Asda and Morrisons – have a 69.5% share of the Great Britain grocery market (see data link below). The next four – Aldi, Co-op, Lidl and Waitrose – have a 23.8% share. If two of the Big 4 were to merge, would there be a significant decline in competition? This is a question the Competition and Markets Authority (CMA) has been considering in the light of Sainsbury’s planned £7.3 billion takeover of Asda (owned by the US retailing giant, Walmart).
In a recently published provisional report, the CMA argues that “the merger could lead to a substantial lessening of competition at both a national and local level.” The CMA has concerns that the merger:
…could lead to a worse experience for in-store and online shoppers across the UK through higher prices, a poorer shopping experience, and reductions in the range and quality of products offered. It also has concerns that prices could rise at a large number of Sainsbury’s and Asda petrol stations. …The combined impact means that people could lose out right across the UK and that the deal could also cost shoppers through reduced competition in particular areas where Sainsbury’s and Asda stores overlap.
Sainsbury’s and Asda currently have a combined market share of 31.2%. This is slightly larger than Tesco’s 27.7%. But would this give the merged companies too much market power? Would there not still be intense competition between the new Big 3? And, with the growth in the German discounters, Aldi and Lidl, as well as competition from Waitrose, the Co-op, Marks & Spencer and Iceland, would there be any significant decline in competition and choice and a rise in prices?
To answer this, it is crucial to define the grocery market. The CMA argues that the major competitors to any Big 4 company are the other Big 4 companies, rather than the German discounters or other supermarkets. Unlike Aldi and Lidl, the Big 4 have a range of facilities, such as fish and meat counters, delivery and a large range of branded products.
At a national level the CMA finds that the merger would reduce competitive pressure, so that a Big 3 would be less competitive than the Big 4, with higher prices and with reduced quality, range of products and in-store services.
At the local level the effects are likely to be serious. Often the consumer has very limited choice of supermarkets at a local level. If a particular area has just two supermarkets, Sainsbury’s and Asda, then the merger of the two could result in a substantial loss of competition. The only alternative for consumers in such areas would be to use small shops, which tend to be more highly priced anyway and do not compete head-to-head with the supermarkets, or to drive to another area or to shop online, depending on how far rival supermarkets are prepared to deliver. Similar arguments apply to supermarket petrol stations, where the only competition to supermarkets is from roadside petrol stations, often selling more highly priced petrol.
In response to the CMA’s findings, Sainsbury’s chief executive, Mike Coupe, claims that they focus too much on competition between the Big 4 and do not take into account competition from Lidl and Aldi, both of which are expending rapidly and now have a combined market share of 12.8% (compared with 10.7% two years ago).
Sainsbury’s and Asda also claim that there would be considerable scope for economies of scale, with lower costs being achieved through purchasing and logistics. In a joint statement they state that:
Combining Sainsbury’s and Asda would create significant cost savings, which would allow us to lower prices. Despite the savings being independently reviewed by two separate industry specialists, the CMA has chosen to discount them as benefits.
The two companies and other interested parties have until 13 March to respond to the provisional findings. The CMA will then issue its final report by 30 April 2019. If it sticks to its provisional findings, then either the merger will be blocked or the merging companies would have to ‘sell off a significant number of stores and other assets – potentially including one of the Sainsbury’s or Asda brands – to recreate the competitive rivalry lost through the merger.’ This might be very difficult to achieve as the new buyer would have to be big enough to provide effective competition to the remaining Big 3. Perhaps this could be an opportunity for Amazon to move into in-store grocery retailing. Or there may be some private equity company that would like to do the same.
It is likely that if the CMA sticks to its ruling, the two supermarkets will apply for a judicial review of the CMA’s decision.
Competition and Markets Authority Report
- In what market segments do the Big 4 supermarkets compete?
- Research earlier investigations of the supermarket sector by the UK competition authorities. What were their findings?
- In what ways might the proposed takeover of Asda by Sainsbury’s affect consumers’ interests (a) at a national level; (b) at the local level?
- What is the ‘GUPPI index’? How is it calculated and how is it used in assessing the effects of the proposed takeover? (See pages 88–91 and 109–11 of the CMA’s Provisional Report and pages I5–I15 of the Appendices and Glossary.)
- Distinguish between horizontal and vertical mergers. How is the distinction relevant in drawing lessons from the Tesco takeover of Booker for the Sainsbury’s takeover of Asda?
- Rather than blocking the takeover, one alternative would be for the CMA to permit it, subject to the sale of specific stores where there are problems of the merger limiting competition in a particular locality. Do you think that this would be a better alternative than blocking the takeover? Explain.
When did you last think about buying a new car? If not recently, then you may be in for a surprise next time you shop around for car deals. First, you will realise that the range of hybrid cars (i.e. cars that combine conventional combustion and electric engines) has widened significantly. The days when you only had a choice of Toyota Prius and another two or three hybrids are long gone! A quick search on the web returned 10 different models (although five of them belong to the Toyota Prius family), including Chevrolet Malibu, VW Jetta and Ford Fusion. And these are only the cars that are currently available in the UK market.
But the biggest surprise of all may be the number of purely (plug-) electric cars that are available to UK buyers these days. The table below provides a summary of total registrations of light-duty plug-electric cars by model in the UK, between 2010 and June 2016.
Source: Wikipedia, “Plug-in electric vehicles in the United Kingdom”
In 2010 there were nly 138 electric vehicles in total registered in the UK. They were indeed an unusual sight at that time – and good luck to you if you had one and you happened to run out of power in the middle of a journey. In 2011 this (small) number increased sevenfold – an increase that was driven mostly by the successful introduction of Nissan Leaf (635 electric Nissans were registered in the UK that year). And since then the number of electric vehicles registered in the country has increased with spectacular speed, at an average rate of 252% per year.
There is clearly strong interest in electric vehicles – an interest likely to increase as their price becomes more competitive. However, they are still very expensive items to buy, especially when compared with their conventional fuel-engine counterparts. What makes electric cars expensive? One thing is the cost of purchasing and maintaining a battery that can deliver a reasonable range. But the cost of batteries is falling, as more and more companies realise the potential of this new market and join the R&D race. As mentioned in a special report that was published recently in the FT:
The cost of lithium-ion batteries has fallen by 75 per cent over the past eight years, measured per kilowatt hour of output. Every time battery production doubles, costs fall by another 5 per cent to 8 per cent, according to analysts at Wood Mackenzie.
There is no doubt that more research will result in more efficient batteries, and will increase the interest in electric cars not only by consumers but also by producers, who already see the opportunity of this new global market. Does this mean that prices will necessarily fall further? You might think so, but then you have to take into consideration the availability and cost of mining further raw materials to make these batteries (such as cobalt, which is one of the materials used in the making of lithium-ion batteries and nearly half of which is currently sourced from the Democratic Republic of Congo). This may lead to bottlenecks in the production of new battery units. In which case, the price of batteries (and, by extension, the price of electric cars) may not fall much further until some new innovation happens that changes either the material or its efficiency.
The good news is that a lot of researchers are currently looking into these questions, and innovation will do what it always does: give solutions to problems that previously appeared insurmountable. They had better be fast because, according to estimates by Wood Mackenzie, the number of electric vehicles globally is expected to rise by over 50 times – from 2 million (in 2017) to over 125 million by 2035.
How many economists does it take to charge an electric car? I guess we are going to find out!
- Using a demand and supply diagram, explain the relationship between the price of a battery and the market (equilibrium) price of a plug-in electric vehicle.
- List all non-price factors that influence demand for plug-in electric vehicles. Briefly explain each.
- Should the government subsidise the development and production of electric car batteries? Explain the advantages and disadvantages of such intervention and take a position.
I admit it, the title of my blog today is a little bit misleading – but at the same time very appropriate for today’s topic. Nancy Sinatra certainly wasn’t thinking about emigration when she was singing this song – it had nothing to do with it, after all. It is, however, very relevant to economists: Indeed, there are many economics papers discussing the effects of skilled immigration on host and source economies and regions.
Economists often use the term ‘brain drain’ to describe the migration of highly skilled workers from poor/developing to rich/developed economies. Such flows are anything but unusual. As The Economist points out in a recent article, ‘[I]n the decade to 2010–11 the number of university-educated migrants in the G20, a group of large economies that hosts two-thirds of the world’s migrants, grew by 60% to 32m according to the OECD, a club of mostly rich countries.’.
The effects of international migration are found to be overwhelmingly positive for both skilled migrant workers and their hosts. This is particularly true for highly skilled workers (such as academics, physicians and other professionals), who, through emigration, get the opportunity to earn a significantly higher return on their skills that what they might have had in their home country. Very often their home country is saturated and oversupplied with skilled workers competing for a very limited number of jobs. Also, they get the opportunity to practise their profession – which they might not have had otherwise.
But what about their home countries? Are they worse off for such emigration?
There are different views when it comes to answering this question. One argument is that the prospect of international migration incentivises people in developing countries to accumulate skills (brain gain) – which they might not choose to do otherwise, if the expected return to skills was not high enough to warrant the effort and opportunity cost that comes with it. Beine et al (2011) find that:
Our empirical analysis predicts conditional convergence of human capital indicators. Our findings also reveal that skilled migration prospects foster human capital accumulation in low-income countries. In these countries, a net brain gain can be obtained if the skilled emigration rate is not too large (i.e. it does not exceed 20–30% depending on other country characteristics). In contrast, we find no evidence of a significant incentive mechanism in middle-income, and not surprisingly, high-income countries.
Other researchers find that emigration can have a significant negative effect on source economies (countries or regions) – especially if it affects a large share of the local workforce within a short time period. Ha et al (2016), analyse the effect of emigration on human capital formation and economic growth of Chinese provinces:
First, we find that permanent emigration is conducive to the improvement of both middle and high school enrollment. In contrast, while temporary emigration has a significantly positive effect on middle school enrollment it does not affect high school enrollment. Moreover, the different educational attainments of temporary emigrants have different effects on school enrollment. Specifically, the proportion of temporary emigrants with high school education positively affects middle school enrollment, while the proportion of temporary emigrants with middle school education negatively affects high school enrollment. Finally, we find that both permanent and temporary emigration has a detrimental effect on the economic growth of source regions.
So yes or no? Good or bad? As everything else in economics, the answer quite often is ‘it depends’.
- Open future: What educated people from poor countries make of the “brain drain” argument
The Economist, R.S. (27/8/18)
- Brain drain, brain gain, and economic growth in China
China Economic Review, Wei Ha, Junjian Yi and Junsen Zhang (April 2016)
- A Panel Data Analysis of the Brain Gain
World Development, Michel Beine, Ric Docquier and Cecily Oden-Defoort (Vol 39, No 4, pp 523–532, 2011)
- ‘The brain drain makes a bad situation worse, by stripping developing economies of their most valuable assets: skilled workers’. Discuss.
- Using Google, find data on the inflows and outflows of skilled labour for a developing country of your choice. Explain your results.
- ‘Brain drain’ or ‘brain gain’? What is your personal view on this debate? Explain your opinion by using anecdotal evidence, personal experience and examples.
- Referring to the previous question, write a critique of your answer.
The annual Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, normally known as the Nobel Prize in Economics, has been awarded 49 times since it was founded in 1969. Many well-known economists have been recipients of the award. This year it had been awarded to Richard Thaler for his research in behavioural economics. The award recognises his work in integrating economics with psychology.
Richard H. Thaler has incorporated psychologically realistic assumptions into analyses of economic decision-making. By exploring the consequences of limited rationality, social preferences, and lack of self-control, he has shown how these human traits systematically affect individual decisions as well as market outcomes.
In total, Richard Thaler’s contributions have built a bridge between the economic and psychological analyses of individual decision-making. His empirical findings and theoretical insights have been instrumental in creating the new and rapidly expanding field of behavioural economics, which has had a profound impact on many areas of economic research and policy.
Instead of making the assumption that people are rational maximisers, behavioural economists look at how people actually behave and respond to various incentives.
For example, people may be motivated by concepts of fairness and be prepared to make personal sacrifices for the sake of others. Such concepts of fairness tend to depend on the social context in which choices are made and can be influenced by the way choices are framed.
Also people may not weigh up costs and benefits but use simple rules of thumb, or heuristics, when making decisions. This might be an example of rational behaviour when time or information is limited, but the use of such heuristics often becomes engrained in behaviour and the rules become just habit.
People may also suffer from a lack of willpower or ‘present bias’. They may spend more than they can afford because they cannot resist the temptation to have a product. They may overeat because of the short-term pleasure it brings and ignore the long-term effects on their health.
Understanding how people make choices and the temptations to which they succumb can help policymakers devise incentives to change behaviour to achieve various social goals.
One type of incentive is nudging. A well-known example is people’s choice about whether to become an organ donor in the event of their death. If people are required to opt in to such a scheme, they may never get round to doing so. However, if they are required to opt out if they do not want to participate, many more people would thereby be donors and more organs would become available.
Another form of nudge is making desirable things fun. A well-known experiment here was encouraging people to use the stairs rather than the escalator when exiting a subway by making the stairs like a musical keyboard. See here for more examples.
The UK government set up a Behavioural Insights Team – also known as the Nudge Unit (now independent of government) to find ways of encouraging people to behave in their own or society’s best interests.
But it is not just governments which use the insights of behavioural economists such as Thaler. The advertising and marketing industry is always examining the most effective means of influencing behaviour. A classic example is the loss leader, where consumers are tempted into a shop with a special offer and then end up buying more expensive items there rather than elsewhere.
Firms and advertisers know only too well the gains from tempting people to buy items that give them short-term gratification – such as putting chocolate bars by the tills in supermarkets.
Understanding consumer psychology helps firms to manipulate people’s choices. And such manipulation may not be in our best interests. If we are being persuaded to buy this product or that, are we fully aware of what’s going on and how our tastes are being affected? Would we, by standing back and reflecting, make the same choices as we do on impulse or out of habit?
And governments too can seek to manipulate people in ways that some may find undesirable. Governments may try to influence us to follow their particular political agenda – as may newspapers. Certainly, during election or referendum campaigns, we are being nudged to vote a particular way.
It is important then for us to understand when we are being nudged or otherwise persuaded. Do we really want to behave in that way? Just as it is important, then, for governments and firms to understand individuals’ behaviour, so too it is important for individuals to understand their own behaviour.
Richard Thaler’s work demonstrates why economics is hard The Economist, RA (11/10/17)
Nobel in Economics Is Awarded to Richard Thaler The New York Times, Binyamin Appelbaum (9/10/17)
The Making of Richard Thaler’s Economics Nobel The New Yorker, John Cassidy (10/10/17)
Nobel prize in economics awarded to Richard Thaler The Guardian, Richard Partington (10/10/17)
Richard Thaler is a controversial Nobel prize winner – but a deserving one The Guardian, Robert Shiller (11/10/17)
What the mainstreaming of behavioural nudges reveals about neoliberal government The Conversation, Rupert Alcock (17/10/17)
This year’s economics Nobel winner invented a tool that’s both brilliant and undemocratic Vox, Henry Farrell (16/10/17)
How a critic of economics became the disciplines Nobel-winning best friend The Guardian, Tiago Mata and Jack Wright (25/10/17)
How Richard Thaler changed economics BBC, More of Less, Tim Harford (14/10/17)
- For what reasons may individuals not always weigh up the costs and benefits of purchasing an item?
- Give some examples of the use of heuristics in making consumption decisions?
- Is the use of heuristics irrational?
- Explain how people considering that they have behaved fairly is influenced by the social context of their behaviour?
- Find out what is meant by the Dictator Game and how it can challenge the assumption that people behave selfishly. How is the ‘dictator’s’ behaviour affected by the possible payoffs?
- Thaler suggested that Brexit could be an example of behavioural economics in action. Find out what he meant by this. Do you agree?
- Give some examples of ways in which the government can nudge people to persuade them to behave in socially or individually desirable ways.
- Find out what is meant by the ‘endowment effect’ and how it influences people’s valuation of items they own.
- Why may nudging by governments be undemocratic?
Earlier this week FIFA, the world governing body of football, announced plans to expand the World Cup from 32 to 48 teams starting in 2026. It is fair to say that this has been met with mixed reactions, in part due to the politics and money involved. However, for an economist one particularly interesting question is how the change will affect the incentives of the teams taking part in the competition.
As a result of the change in the first stage of the competition, teams will be play the two other teams in their group. The best two teams in the group will then progress to the next round with the worst team going home. This is in contrast to the current format where the best two teams from a group of four go through to the next round.
Currently, in the final round of group matches all four of the teams in the group play simultaneously. However, an immediate implication of the new format is that this will no longer be the case. Instead, one of the teams will have finished their group matches before the other two teams play each other. This could have important implications for the incentives of the teams involved. To see this we can recall a very famous match played under similar circumstances between West Germany and Austria at the 1982 World Cup.
The results of the earlier group games meant that if West Germany beat Austria by one or two goals to nil both teams would progress to the next round. Any other result would mean that Algeria progressed at the expense of one of these two teams. The way in which the match played out was that West Germany scored early on and much of the rest of the game descended into farce. Both teams refused to attack or tackle their opponents, as they had no incentive to so (see here for some clips of the action, or lack of!).
There is no evidence to suggest that West Germany and Austria had come to a formal agreement to do this. Instead, the two teams appear to have simply had a mutual understanding that refraining from competing would be beneficial for both of them.
This is exactly what economists refer to as tacit collusion – a mutual understanding that refraining from competition and keeping prices high benefits all firms in the market. Much like the fans who had to sit through the farce of a game (you can hear the frustration of the crowd in the video clip linked to above), the end result is harm to consumers who have to pay the higher prices or go without the product.
For this reason governments use competition policy to try to stop situations arising in markets that make the possibility of tacit collusion more likely. One way in which this is done is by preventing mergers in markets where tacit collusion appears possible and would be facilitated by the reduction in the number of firms as a result of the merger. The equivalent for the World Cup would be preventing a change in the format of the competition.
An alternative approach is to tinker with the rules of the game in order to make collusion harder. FIFA seems to have some awareness of the possibility of doing this as it is suggesting that it may require all tied games to extra-time and then a penalty shoot-out in order to determine a winner. Clearly, this would go at least some way to alleviating concerns about tacit collusion in the final group matches because coordinating on a draw would no longer be possible. In a similar fashion, competition authorities can also intervene in markets to change the rules of the game (see for example the recent intervention in the UK cement industry).
Therefore, more generally, the World Cup example highlights the fact that variations in the structure of markets and the rules of the game can have significant effects on firms’ incentives and this can have important consequences for market outcomes. It will certainly be fascinating to see what rules are imposed for the 2026 World Cup and how the teams taking part respond.
World Cup: Fifa to expand competition to 48 teams after vote BBC News (10/1/17)
How will a 48-team World Cup work? Fifa’s plan for 2026 explained The Guardian, Paul MacInnes (10/1/17)
The Disgrace of Gijón and the 48-team FIFA World Cup Mike or the Don (12/1/17)
- What is the difference between tacit collusion and a cartel?
- Why does a reduction in the number of firms in a market make collusion easier?
- What other factors make collusion more likely?
- How does competition policy try to prevent the different forms of collusion?