[1] Univ East Anglia, Ctr Competit Policy, Competit Policy, Norwich, England
[2] Univ East Anglia, Norwich Business Sch, Norwich, England
[3] Ctr Regulat Europe CERRE, London, England
[4] Toulouse Sch Econ, Econ, Toulouse, France
[5] Heinrich Heine Univ Dusseldorf, Dusseldorf Inst Competit Econ DICE, Behav & Competit Econ, Dusseldorf, Germany
[6] Yale Univ, Tobin Ctr Econ Policy, New Haven, CT USA
[7] Harvard Kennedy Sch, Mossavar Rahmani Ctr Business & Govt, Cambridge, MA USA
[8] Tilburg Univ, Tilburg Law & Econ Ctr, Competit Law, Tilburg, Netherlands
[9] Heinrich Heine Univ Dusseldorf, Civil Law, German & European Competit Law, Dusseldorf, Germany
[10] Ludwig Maximilians Univ Munchen, Econ, Munich, Germany
[11] German Council Econ Experts, Munich, Germany
[12] Yale Sch Management, Econ, New Haven, CT USA
[13] NBER, Cambridge, MA USA
[14] Univ Namur, European Law, Namur, Belgium
[15] Namur Digital Inst, Namur, Belgium
[16] European Commiss, EU Observ Online Platform Econ, Brussels, Belgium