In a framework with an upstream monopoly and a downstream duopoly, we analyze the impact of convex costs on the downstream level. In contrast to the case of constant marginal costs, vertical integration does not imply complete market foreclosure. While the non-integrated downstream firm receives...

Das Vorhaben einiger Breitbandnetzbetreiber, Content Provider für die Durchleitung der Inhalte zu bepreisen, hat in den USA eine erbitterte Debatte darüber hervorgerufen, ob und inwiefern Netzneutralität im Internet einer gesonderten Regulierung bedarf. Es wurde dabei vor allem vor einer...

The EU competition policy in regard to vertical restraints is mainly based upon neoclassical efficiency-oriented reasonings, leading to a neglect of the innovation dimension. This paper analyses to what extent evolutionary theories of competition and innovation economics can be used to derive...

In this paper, historical functionalities of the traditional Internet are contrasted with today's Internet functionalities of the smart Internet architecture. It is shown that network neutrality regulation prohibiting congestion management and traffic quality differentiation is contrary to...

Der Rechtsstreit des Software-Anbieters Microsoft mit den US-amerikanischen Wettbewerbsbehörden machte in letzter Zeit häufig Schlagzeilen. Es geht dabei primär um die Frage, ob das Unternehmen den Internet Explorer im Zwangspaket mit dem Betriebssystem Windows verkaufen darf. Das...

We analyze the effects of downstream firms' acquisition of pure cash flow rights in an efficient upstream supplier when all firms compete in prices. With an acquisition, downstream firms internalize the effects of their actions on their rivals' sales. Double marginalization is enhanced. Whereas...