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DTSTART:20241027T030000
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UID:calendar.135687.field_date.0@www.tse-fr.eu
DTSTAMP:20260809T095231Z
CREATED:20240924T081001Z
DESCRIPTION:Jay Pil Choi (Michigan State University)\, ““Sherlocking” and P
 latform Information Policy”\, Economics of Platforms Seminar\, March 4\, 2
 025\, 14:00–15:00\, Zoom Meeting.\n\nPlatform-run marketplaces may exploit
  third-party sellers’ data to develop competing products but the threat of
  future competition can deter sellers’ entry. We explore\nhow this trade-o
 ff affects the platform’s entry on the marketplace and the referral fee\ni
 t charges to the third-party sellers. We first characterize the platform’s
  optimal fee\nunder different degrees of commitment on its own entry polic
 y. We show that full commitment maximizes not only the platform’s payoff b
 ut also consumer surplus\, as the\nassociated fee induces maximal entry by
  the sellers. Next\, we show how and when the\nplatform’s policy on inform
 ation sharing between its marketplace and product divisions\ncan substitut
 e for its commitment to entry. We characterize the platform’s optimal\ninf
 ormation policy and examine how it interacts with the platform’s fee struc
 ture. We\nshow that outright ban on information sharing between the platfo
 rm’s divisions can\nreduce consumer welfare as it may lead to a higher ref
 erral fee that thwarts sellers’ entry. Our findings highlight the importan
 ce of considering the platform’s fee structure\nas a strategic response in
  the policy debates on marketplace regulation.
DTSTART;TZID=Europe/Paris:20250304T140000
DTEND;TZID=Europe/Paris:20250304T150000
LAST-MODIFIED:20260113T095129Z
LOCATION:March 4\, 2025\, 14:00–15:00\, Zoom Meeting
SUMMARY:Economics of Platforms Seminar
URL;TYPE=URI:https://www.tse-fr.eu/seminars/2025-sherlocking-and-platform-i
 nformation-policy
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