Abstract AbstractDie Festschrift für Jörn Kruse enthält Beiträge aus den Bereichen Medien- und Telekommunikationsökonomik, Wettbewerbspolitik, Sportökonomik, Energiepolitik sowie allgemeine Fragen der Wirtschafts- und Ordnungspolitik. Sie reflektieren nicht nur den breiten Schaffenskreis...

This paper estimates demand elasticities for the Turkish mobile telecommunication market. In contrast to most other studies, firm level data is used to estimate dynamic panel data models including instrumental variable techniques. Both short- and long-run elasticities are calculated, yielding a...

This paper summarizes the peculiarities of online markets and discusses recent antitrust cases related to online markets. Following a brief description of the online markets' characteristics and potential tendencies for concentration the paper first discusses the antitrust allegations and...

[Introduction:] The route to customers is becoming increasingly digital, for any business. There is hardly any business that is not focussing on reaching customers online. The Covid-19 pandemic has further accelerated this trend. In many markets, digital platforms have become essential tools for...