Kaum eine ordnungspolitische oder regulatorische Frage hat in der deutschen Telekommunikationsbranche wohl in den letzten Jahren für so viel Aufruhr gesorgt, wie die Einführung des neuen §9a in das Telekommunikationsgesetz (TKG). Die neue Vorschrift sieht vor, dass die Bundesnetzagentur...

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and...

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and...

Competition authorities and regulatory bodies have increasingly made use of econometric and statistical methods in their analysis. Due to limitations of time and data, so-called screening methods have become more and more important in order to decide whether an in-depth inquiry is warranted....

In order to avoid over-regulation, some countries have experimented with what might be called threat-based regulation. The idea is - similarly to the contestable market model - that actual regulation may not be necessary as long as the threat of regulation is credible. In that case, so the idea,...