We analyze R&D collaboration networks in industries where firms are competitors in the product market. Firms' benefits from collaborations arise by sharing knowledge about a cost-reducing technology. By forming collaborations, however, firms also change their own competitive position in the...

This paper contains an economic and legal analysis of the lawsuit Microsoft vs. U.S. Department of Justice beginning with the District Court's decision on June 7, 2000 up to the Proposed Final Judgement on November 6, 2001. I found that the courts' underlying economic paradigm regarding the...

In diesem Aufsatz wird gezeigt, dass das Phänomen der Pfadabhängigkeit in Netzsektoren besonders relevant ist. Auf der Nachfrageseite können positive Netzexternalitäten dazu führen, dass eine weitverbreitete Technologie mit einer großen Nutzerbasis selbst dann noch beibehalten wird, wenn...

We consider dynamic competition among platforms in a market with network externalities. A platform that dominated the market in the previous period becomes "focal" in the current period, in that agents play the equilibrium in which they adopt the focal platform whenever such equilibrium exists....