A number of technology products display positive network effects, and are used in variable quantities by heterogeneous customers. Examples include operating systems, infrastructure and back-end software, web services and networking equipment. This paper studies optimal nonlinear pricing for such...

We model an oligopolistic technology market in which firms endogenously choose product scope,fixed costs are affected by exogenous technological progress, and there may be threat of entry. Ouranalysis shows that equilibrium outcomes involve substantial overinvestment in product scope,which...

We model the bilateral threat of entry between firms in two industries, which is characteristic of a number of IT industries. An endogenous choice of product scope by firms in each industry affects both the extent of product differentiation for incumbent oligopolists as well as the fixed costs...

A number of technology products display positive network effects, and are used invariable quantities by heterogeneous customers. Examples include operating systems, infrastructureand back-end software, web services and networking equipment. This paper studies optimalnonlinear pricing for such...

A number of products that display positive network effects are used in variable quantities by heterogeneous customers. Examples include corporate operating systems, infrastructure software, web services and networking equipment. In many of these contexts, the magnitude of network effects are...