Die vorliegende Arbeit beschreibt die Konzeption und Erhebung der ZEW/Creditreform Umfrage bei Dienstleistern der Informationsgesellschaft. Diese im Jahr 2002 eingeführte Umfrage geht aus einer Umfrage bei unternehmensnahen Dienstleistern hervor, die ZEW/Creditreform zwischen 1994 und 2001...

The telecommunications sector is characterized by economies of scale and scope, high sunk costs, and strong network effects. This combination may facilitate monopolization and abuse of market power. The present study evaluates the need for sector-specific regulation in this sector. It is shown...

The majority of industrial organizations literature on network externalities looks at firm behavior under given market characteristics. The present paper instead asks the question whether the presence of network externalities can change market characteristics, specifically, whether an initially...

This paper gives a survey of the current state of competition in the German Broadband access market. Existing regulations and their impact on the deployment of high-speed Internet access are evaluated. It is argued that facilities-based competition is preferable to open-network regulations. The...

This paper provides an overview of telecommunications regulation in the U.S. and in Europe. For each region the history of telecommunications regulations as well as the current regulatory regime is portrayed. The focus of this overview is on the question of how unbundling regulations in the...

The majority of industrial organizations literature on network externalities looks at firm behavior under given market characteristics. The present paper instead asks the question whether the presence of network externalities can change market characteristics, specifically, whether an initially...