Selten hat ein wettbewerbspolitischer Fall so viel Interesse und Kontroversen hervorgerufen wie der E-Book-Fall rund um Amazon, bei dem führende Verlage und große Unternehmen wie Apple involviert sind. Doch dieser spiegelt nur eine von vielen unternehmerischen Vorgehensweisen Amazons wider....

Summary Dominant or apparently dominant internet platform increasingly become subject to both antitrust investigations and further-reaching political calls for regulation. While Google is currently in the focus of the discussion, the next candidate is already on the horizon - the ubiquitous...

Event studies represent an increasingly popular method to evaluate the welfare effects of economic policy decisions. The basic idea is that stock market reactions to the announcement of policy decisions contain superior information about the welfare effects of these decisions. This paper...

The importance of digital platforms and related data-driven business models is ever increasing and poses challenges to the workability of competition in the respective markets (tendencies towards dominant platforms, paying-with-data instead of traditional money, privacy concerns, etc.). Due to...

Der Beitrag kommentiert den Stand der Literatur zu den Auswirkungen der Medienberichterstattung auf politische Meinungen und Wahlverhalten. Er geht dabei insbesondere auf den theoretischen Hintergrund, die Rolle der Wettbewerbs- und Regulierungspolitik sowie die Besonderheiten des digitalen...

We review the economics of superstars, originally developed for stars in traditional media, and discuss whether they are applicable for the novel phenomenon of stars in social media (influencer, micro-celebrities). Moreover, we analyse potentially new factors for creating social media...