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Home | Events Archive | Competition and Defaults in Online Search
Seminar

Competition and Defaults in Online Search

  • Series
    ACLE Law & Economics Seminars
  • Speaker(s)
    Francesco Decarolis (Bocconi University, Italy)
  • Field
    Marketing
  • Location
    University of Amsterdam, Roeterseilandcampus, A3.01
    Amsterdam
  • Date and time

    January 21, 2025
    13:00 - 14:15

Abstract

his paper offers the first systematic quantitative assessment of default-option interventions designed to mitigate Google’s search dominance. By analyzing interventions in the European Economic Area, Russia, and Turkey, we find that, across all three cases, changes to default settings effectively reduced Google’s market share. The causal impact amounts to less than 1 percentage point in the EEA and over 10 percentage points in Russia and Turkey. Differences arise from intervention nuances, including the size of the targeted users’ group, local market characteristics, and remedy designs. We discuss the complexity of assessing the interventions’ impact on welfare deriving from quality responses.