What's new on competition in digital markets - program

Program (CET time)
June 10, 2022 

All lectures include 15 min of discussion and 15 min of Q&A.

 Rule is applied for this event

9:00 – 10:30
Lecture: Personalized pricing and competition by Andrew Rhodes, Professor, TSE 

Firms increasingly use data to offer consumers a personalized experience. This lecture will focus on personalized pricing---the practice of offering different consumers different prices, based on their perceived preferences. We will discuss different ways in which such personalization can be (directly or indirectly) implemented. We will then study its impact on competition, both in the short-run (fixing market structure) and in the long-run (allowing for firm entry and exit). We will also evaluate different policy proposals when only some firms are able to use data to personalize prices

Discussant: Helen Ralston, Partner, Oxera


10:30 - 10:50 Break


10:50 – 12:20
Lecture:  The effects of online consumer discovery costs on product variety, quality, and consumer welfare by Daniel Ershov, Professor, TSE

Product variety is a key component to consumer welfare in the many online markets where prices are effectively zero, and much of digital public policy is concerned with promoting entry. At the same time, product proliferation creates market congestion and makes consumer discovery challenging. Products compete for scarce visible space and consumer attention, limiting the visibility of, and benefits from, additional varieties. As a result, policies that promote entry may increase congestion and generate subtle countervailing effects on consumer welfare. This lecture will present novel evidence on such forces with data from the Google Play mobile app market. Using a natural experiment coming from a store re-design, we will test for both demand-side evidence of congestion effects and supply-side changes in product entry and design. A model of limited consumer consideration will allow us to evaluate the effects of congestion on consumer welfare coming from new varieties. More broadly, we will discuss the policy implications of these results and the potential tensions between public policy goals of promoting competition, and consumer and firm concerns about product proliferation and congestion.

Discussant: Patricia Lorenzo, Senior Vice President, Compass Lexecon


12:20 – 13:40 Lunch break


13:40 - 15:10
Lecture: Data and competition by Alexandre de Cornière, Professor, TSE

Data is at the center of the ongoing digital revolution, enabling innovations and customization but also raising concerns about its competitive effects. In this lecture we will discuss the links between data and competition, with a special emphasis on data-driven mergers.

Discussant: Cristina Caffarra, Senior Consultant, Charles River Associates


15:10 – 15:30 Break


15:30 – 17:00
Policy session: Data and market power
Moderated by: William Kovacic, Professor, George Washington University, Non-Executive Director, CMA, and Former Chairman, FTC.

Katarzyna Czapracka, Partner, White & Case
Stephen Lewis, Partner, RBB Economics
Pierre Régibeau, Chief Competition Economist, European Commission
Katrin Schallenberg, Partner, Clifford Chance 
Richard Stables, CEO, Kelkoo Group



Program PDF

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