Results: Large increase in Chinese apps and innovation in China And also: Large increase of Chinese apps in *foreign* Asian countries 👏 There is much more in paper. You can read it here👇

Read our blog on Political Power and Market Power via @HarvardCorpGov @andreapratnyc @bocowgill

RT @EgyptsBeer: I'm Schrödinger's Arab, I both cost you the election and have no effect on American politics at all

From "Don't be evil" to "Just shoot them". A lesson in corporate ethics.

I had 5 min to waste and asked Chat GPT-4 to write a short CV of "Tommaso Valletti economist". This is ALL public info. Result: I never studied in Rome My first degree is not economics I never worked for the Italian Comp Authority I never wrote these papers (though I wish I had)

New article with @LancieriFilippo just out in the @OxrepJournal We propose rebuttable structural presumptions as a key tool in an effective merger review policy. You can read it here (open access)👇 @LeverhulmeTrust

RT @StiglerCenter: Three antitrust and competition experts—@MBotta81 (@EUI_EU), Stefan Thomas (@uni_tue), and @TomValletti (@imperialcolleg…

@lewis_crofts @sofiaxsmith @secondmentions In economics there's a long debate on whether to tackle negative externalities by increasing prices or reducing quantities. Here's the most compelling case of a complete ban (0 quantity, forever) making humanity better.

With civil society (probono) I tried to oppose this. Thanks in particular to @nickshaxson and @unitetheunion. But civil society has no organisation, no money, and alas very few people willing to listen. We lost. How can we change this? Fin/Ciao

@J2dubyas On the “Uber” problem I had expressed my views a while ago On data disclosure (I agree with you it’s key) we have some suggestions in the last section of this recent paper

@jdube6 Sure. But I’m sure you get my point. Change the word “Uber” with facebook or Airbnb or Google or Amazon. It’s a huge problem for the credibility of results, and for our understanding of digital industries

@joshgans All disclosures are very transparent on the front page. Everyone can check