We study a Hotelling framework in which customers first pay a monopoly platform to enter the market before deciding between two competing services on opposite ends of a Hotelling line. This setup is common when modeling competition in Internet content provision. We find that standard...

We show how increased competition in a media market may have implications for the competition between firms that are advertising in that medium. We apply a simple model of a product market with network externalities where firms buy advertising space in a media market and find that there is more...

Der vorliegende Abschlußbericht basiert auf den Ergebnissen des Arbeitskreises „Mediendienste“, der im Rahmen der BMBF-Initiative „Dienstleistung 2000plus“ konstituiert wurde. Im Mittelpunkt der Aktivitäten dieses Arbeitskreises, an dem sich insgesamt 32 Experten aus Wirtschaft,...