Die digitale Wirtschaft stellt an die Politik in mehreren Bereichen Anforderungen. Insbesondere muss die Wettbewerbspolitik gewährleisten, dass Internetplattformen ihre Marktmacht nicht künstlich ausweiten und dass andere Marktteilnehmer ihre Rechte gegenüber marktmächtigen Plattformen...

There is vigorous debate over the ability of the current antitrust enforcement regime in the United States to protect against potential reductions in competition caused by large technology companies. Some commentators have argued that current antitrust rules and processes cannot address...

Platforms often use fee discrimination within their marketplace (e.g., Amazon, eBay, and Uber specify a variety of merchant fees). To better understand the impact of marketplace fee discrimination, we develop a model that allows us to determine equilibrium fee and category decisions that depend...