Enormous growth and rapid changes challenge business strategy and the economic theory of the online industry. In the new marketspaces of the Internet much is happening, while causes and effects often seem unclear. The fundamental relevance for businesses, industrial sectors, and for academia...

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....

Using quarterly data of 58 countries, this paper provides empirical evidence that mobile phone diffusion from 2007 to 2009 is positively influenced by international network effects. Direct and indirect network effects are a result of the international standadization of telecommunication...