Econ professor @imperialcollege. Londoner, made in 🇮🇹. Flute über alles 🎵

Joined March 2013
Tommaso Valletti retweeted
Why do firms acquire competitors? Not just to increase market power, but also to increase political power. Firms may undertake acquisitions purely to extract political support from politicians who fear the consequences of their failure. @TomValletti matteobroso.com/papers/theor…
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Back, but only shortly, on this platform after a long break, for obvious reasons. Looked around. 2 things worry me. 1: AER and Econometrica have linked their editorial pipeline to the same private AI platform, handing it a first-mover advantage across the top of the discipline.
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Exactly the kind of bottleneck we warn about everywhere except our own backyard. 2: that tool is being used publicly to score points against a political philosopher's new entry on capitalism. We like to tell ourselves economists aren't ideological. We are, we just don't admit it.
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Tommaso Valletti retweeted
Valletti: «Otto anni di contenzioso non sono un deterrente» | L'intervista di Alberto Cantoni oggi su ItalyPost. Per leggere: zurl.co/FC7sr
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Tommaso Valletti retweeted
Non basta regolare le nuvole | L'editoriale di Tommaso Valletti oggi su ItalyPost. Per leggere: zurl.co/NoTT8
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Tommaso Valletti retweeted
More from the Europe 2050 project. shorturl.at/3jZKE An important contribution from Tommaso Valletti, on why Europe has half as many high growth startups per capita as the US, and what to do about it. shorturl.at/GPRoP Among his recommendations, one which struck me, and is likely to be controversial, especially coming from a former chief competition economist of the EU, is to restructure merger review, and, in particular, take into account where the benefits land: The rationale: A merger when a big US firm buys a European startup may be good or bad for the world but is likely to be less good for Europe than for the US. (Read the full paper for more flesh and discussion)
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Tommaso Valletti retweeted
In his contribution to CEPR's Europe 2050 series, @TomValletti offers a provocative reframing of Europe's innovation deficit: the problem is not only one of scale, capital, or regulation, but of market structure. Read the paper to see how he proposes to solve it. ow.ly/BblM50Zey9S #Europe2050 @ojblanchard1
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Tommaso Valletti retweeted
CEPR Competition Policy RPN Webinar - Straight Talk: Draft New Merger Guidelines vs “Competitiveness” Mission 📆1 July at 5PM CEST/11:00AM EDT 📍Online 🗣️@TomValletti @tomaso_duso @florianederer @SanderTordoir @Caffar3Cristina Register: ow.ly/amBZ50ZbMWy
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Tommaso Valletti retweeted
New CEPR Discussion Paper - DP21420 Mergers, Lobbying, and Elections: Is there a "Curse of Bigness"? Matteo Broso @unibs_official, Tommaso Valletti @TomValletti @ImperialBiz ow.ly/2XSh50YRAT6 #CEPR_IO #CEPR_PoE #EconTwitter
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Tommaso Valletti retweeted
Tommaso Valletti, @TomValletti, Professor of Economics, Imperial College Business School, stated that “We’re witnessing not classic monopolies, but what I call portfolio capitalism, which is a few dominant players building bottlenecks across the AI value chain: chips, cloud, models, and data. Each layer reinforces the next, making new market entry nearly impossible.” #TRTWorldForum2025 #TRTWorldForum #GlobalReset
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Why book publishing contradicts conventional wisdom about competition. By @Cgenakos Lorien Sabatino, @TomValletti In CentrePiece magazine Read: cep.lse.ac.uk/_new/publicati…
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Tommaso Valletti retweeted
Okay I'm going to need someone to explain to me why Gianni Infantino, the head of FIFA, is at the Gaza ceasefire summit in Sharm
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I revisit the Innovation Theory of Harm (ITOH): mergers often reduce incentives to innovate. Once the econ theory literature is read correctly, the evidence overwhelmingly supports ITOH.
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Bottom line: Without synergies/spillovers, mergers harm consumers.
Weakening merger control in the name of innovation is misguided. 
📄 open access article sciencedirect.com/science/ar… @LeverhulmeTrust
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Tommaso Valletti retweeted
This picture
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New paper just accepted in the Antitrust Law Journal written with John Kwoka. We study the policy toward consummated mergers that prove to be anticompetitive, both in theoretical and empirical terms. 1/2
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Findings: Ex post actions against consummated mergers exist but do not have a good record of success. Implications: postmerger policy ineffectiveness needs a more stringent ex ante policy in order to achieve the right balance. Pre-print: lnkd.in/ezZRJcWR 2/2
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Tommaso Valletti retweeted
Farewell to one of the greatest pianists – Alfred Brendel has died aged 94. The Czech-born pianist was one of the great musicians of the twentieth and twenty-first centuries, renowned for his interpretations of the keyboard works of Haydn, Mozart, Schubert, Brahms, Liszt and Beethoven. Brendel retired from the concert hall in 2008 and spent his final years teaching young musicians, as well as writing essays on music and making his own collections of poetry.
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I published this piece in @thetimes today. Competition should work for the many, not the few.
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