Die Einführung neuer Endkundentarife für den festen Internetzugang durch die Deutsche Telekom hat die Netzneutralitätsdebatte erneut befeuert. Dabei geht es um die Frage, ob Endkundenanbieter bei der Übertragung von Daten im Internet bestimmte Dienste oder Inhalte gegen ein vom Sender oder...

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...

This paper analyses how different types of access regulation to next generation networks affect investments and consumer welfare. The model consists of an investment stage with uncertain returns and subsequent quantity competition. The access price is a function of investment costs and the...

This paper analyses how different types of access regulation to next generation networks affect investments and consumer welfare. The model consists of an investment stage with uncertain returns and subsequent quantity competition. The access price is a function of investment costs and the...

Hybrid governance structures between markets and hierarchies in many industries, e.g., in energy and telecommunications, challenge antitrust and regulation policy. The paper focuses on the theoretical and methodological basis provided by the New Institutional Economics (NIE) for analyzing the...

This paper analyzes the incentives to invest in Next Generation Access Networks (NGA) in a framework with horizontal product differentiation with price competition between an investing and an access seeking firm. Given uncertainty about the success of the NGA, I compare regulatory regimes with...

We examine the effects of mobile termination rate regulation in asymmetric oligopolies. We do this by extending existing models of asymmetric duopoly and symmetric oligopoly where consumer expectations about market shares are passive. We first calibrate product differentiation parameters using...

The European Commission reported on the implementation of the current Roaming II Regulation and proposed the Roaming III Regulation to run until 2022. This combined wholesale and retail price caps for voice, SMS and data (the retail data price cap being new). It also proposed the introduction of...

Market definition is an essential ingredient to competitive and regulatory analysis. Yet, there is significant disparity regarding the definition of the relevant geographic market for high-capacity circuits, commonly referred to as Special Access services. Given the present debate over expanding...

In this paper, we study how access pricing affects network competition when subscription demand is elastic and each network uses non-linear prices and can apply termination-based price discrimination. In the case of a fixed per minute termination charge, we find that a reduction of the...