In this paper we present a history-friendly model of the changing vertical scope of computerfirms during the evolution of the computer and semiconductor industries. The model is“history friendly”, in that it attempts at replicating some basic, stylized qualitative features ofthe evolution of...

In this paper we present a history-friendly model of the changing vertical scope of computer firms during the evolution of the computer and semiconductor industries. The model is history friendly, in that it attempts at replicating some basic, stylized qualitative features of the evolution of...

In this paper we present a history-friendly model of the changing vertical scope of computer firms during the evolution of the computer and semiconductor industries. The model is “history friendly”, in that it attempts at replicating some basic, stylized qualitative features of the evolution...

In this paper we present a model of the long term dynamics of market structure and innovation in the pharmaceutical industry in a history friendly way. Our results show a strong increase in concentration in each therapeutic area, but a rather low level of concentration in the overall market....

The history of a number of industries is marked by a succession of eras, associated with different dominant technologies. Within any era, industry concentration tends to grow. Particular eras are broken by the introduction of a new technology which, while initially inferior to the established...

This paper examines how the nature of the technological regime governing innovative activities and the structure of demand interact in determining market structure, with specific reference to the pharmaceutical industry. The key question concerns the observation that - despite high degrees of...