Antitrust actions: Views of leading economists on the cases against Facebook

Romesh Vaitilingam 06 January 2021



The US Federal Trade Commission and 46 states have brought antitrust cases against Facebook, which could potentially require the company to unwind its acquisitions of Instagram and WhatsApp. The IGM Forum at Chicago Booth, which, for nearly a decade, has been regularly polling some of the world’s top economic experts in the United States and Europe for their views on topical issues of public policy, invited its US and European panels to express their views on this issue.

Several of the panellists have written on this and related topics, and in their responses to the survey, draw attention to background information and related research by themselves or colleagues. Pete Klenow (Stanford University) refers to his joint work on falling growth and rising firm concentration (Aghion et al. 2020). Daron Acemoglu links to his column on antitrust and innovation (Acemoglu 2020). Aaron Edlin points to his opinion piece with Carl Shapiro arguing that breaking up Facebook would backfire (Edlin and Shapiro 2019). And Christian Leuz references the 2019 report by the Stigler Committee on Digital Platforms (Stigler Center 2019).

Following the standard format of the IGM polls, the experts were asked whether they agree or disagree with the following statement, and, if so, how strongly and with what degree of confidence:

"Requiring Facebook to divest WhatsApp and Instagram is likely to make society better off."

Of the 43 US experts, 38 participated in this survey; of the 48 European experts, 43 participated – for a total of 81 expert reactions. Weighted by each expert’s confidence in their response, 3% of the US panel strongly agree, 56% agree, 24% are uncertain, 8% disagree, and 8% strongly disagree. Among the European panel (again weighted by each expert’s confidence in their response), 22% strongly agree, 56% agree, 17% are uncertain, and 5% disagree.

Overall, across both panels (weighted by confidence), 14% strongly agree, 56% agree, 20% are uncertain, 6% disagree and 3% strongly disagree. A considerably larger proportion of experts on the European panel agree or strongly agree with the statement than the US panel (78% compared with 59%); nearly a quarter of US experts are uncertain; and just over a sixth of US experts disagree.

More nuances among the experts’ views come through in the short comments that they are able to include when they participate in the survey. Among those who agree or strongly agree with the statement, several refer to Facebook’s market power and the potential benefits of greater competition for consumer welfare.

Marco Pagano (University of Naples Federico II) comments: ‘After acquiring Instagram and WhatsApp, Facebook has monopolized the social network market. Breaking it up would restore competition in this market.’ Peter Neary (University of Oxford) adds: ‘Clearly a reduction in market power, reducing ability to coordinate across brands, would raise consumer and total welfare.’ And Barry Eichengreen (UC, Berkeley) says: ‘In the short run, uncertain; in the long run, lower entry barriers and more competition make for innovation and consumer welfare.’

Others who agree with the statement also look at possible effects of required divestment. Daron Acemoglu (MIT) argues: ‘Big tech has an oversized and negative effect on direction of technology. Reducing their size and economic/social power is a first remedy.’ David Autor (MIT) states: ‘My main hope is that forced breakup would deter other future anticompetitive merger attempts.’ And Richard Thaler (Chicago Booth) speculates: ‘I don’t know why these acquisitions were allowed. Could Amazon buy Walmart? Each could be sold for big bucks.’

Two panellists who agree with the statement mention concerns about the use of personal data. Jan Pieter Krahnen (Goethe University Frankfurt) suggests: ‘The two major elements in restoring consumer sovereignty are: strong(er) data protection rights, and competition in the use of data.’ And Antoinette Schoar (MIT) notes: ‘Less concentration in social media is important. But the benefits to society depend on how the ownership of personal data will be regulated.’ 

Two others who agree with the statement raise questions about how divestment might play out. Oliver Hart (Harvard University) says: ‘Facebook is too powerful and so this might help. But it may be messy. Perhaps a better strategy is to stop future acquisitions.’ And Richard Schmalensee (MIT) warns: ‘Probably, but omelettes are hard to unscramble, and failure of the spun-out firms could reduce consumer choice.’ 

Judith Chevalier (Yale University), who says she is uncertain, continues that analogy: ‘Allowing those acquisitions a likely mistake, need a little more data on unscrambling the eggs.’ Similarly, Christian Leuz (Chicago Booth) concludes: ‘Uncertain, not because there is no issue; many good reasons to take action. But not clear breakup best solution. Need new approach for digital providers.’

Among other panellists who are uncertain, Kjetil Storesletten (University of Oslo) notes: ‘We lack a thorough understanding of products, competition, and market power in social media markets. Difficult to see quick fixes.’ Pinelopi Goldberg (Yale University) states: ‘Many of the social ills one associates with Facebook might get worse with more competition leading to a race to the bottom (see TikTok).’ And Aaron Edlin (UC, Berkeley), who disagrees with the statement, shares those concerns: ‘When firms produce bads instead of goods, then competition leads to more bads, which is… bad. A breakup could backfire.’ 

Among other panellists who disagree or strongly disagree with the statement, there are a number of different perspectives. Robert Hall (Stanford University) says: ‘Standard industrial organization theory says mergers of sellers of complements are good.’ Robert Shimer (University of Chicago) adds: ‘The direct benefits of forced divestment are likely minimal or non-existent. The costs from increased uncertainty are significant.’ And Nicholas Bloom (Stanford University) concludes: ‘I do not think governments should be so massively altering private sector firm structures like this unless absolutely necessary.’


Acemoglu, D (2020), “Antitrust alone won’t fix the innovation problem", Project Syndicate.

Aghion, P, A Bergeaud, T Boppart, PJ Klenow and H Li (2020), "A theory of falling growth and rising rents", mimeo. 

Edlin, A, and C Shapiro (2019), "Why breaking up Facebook would likely backfire", The Mercury News.

Stigler Center (2019), Stigler Committee on Digital Platforms: Final Report.



Topics:  Competition policy

Tags:  Facebook, antitrust, IGM polls, IGM Forum

Economics writer and communications consultant, member of Vox editorial board


CEPR Policy Research