The ubiquitous process of digitization changes economic competition on markets in several ways and leads to the emergence of new business models. The increasing roles of digital platforms as well as data-driven markets represent two relevant examples. These developments challenge competition...

In this paper I develop a structural model of platform demand in two-sided markets and use it to estimate platform market power and predict price changes in post-merger markets. My model and estimation procedure are applicable to settings where (1) agents on each side care about the presence of...

Während die meisten Netzsektoren wie etwa der Telekommunikations- oder der Flugsektor längst wettbewerblich organisiert sind, verbleibt der Trinkwassersektor in den meisten Ländern als letzte Bastion vertikal integrierter Versorgungsmonopole.Die Arbeit untersucht unter konsequenter Anwendung...

Die Digitalisierung hat Medienmärkte grundlegend verändert: Statt begrenzten Funkfrequenzen und festen Programm, werden Medieninhalte über unterschiedlichste Kanäle verteilt, erstellt, geteilt und diskutiert. Digitale Plattformen haben den Konsum grundlegend verändert und ermöglichen es...

In some industries, monopoly is natural. One provider can serve the relevant demand cheaper than two or more firms. If the monopoly is not contestable, i.e. not controlled by a credible threat of entry, regulation is necessary. The essential facilities doctrine is one such regulatory tool. It...

Triggered by the concentration process in the electricity and gas markets, the land of Hesse proposes to give the German cartel office power to divest dominant firms or oligopolies if this is necessary to restore competition. The paper shows that the reform would be in line with constitutional...