This paper proposes a new approach to explain the long-term evolution of a supplier industry. The network of vertical relations between suppliers and buyers is identified as a determinant of the concentration of the supplier industry and of the dynamics of market shares. The vertical structure...

The paper develops the argument that the long-term structural evolution of an industry depends on the evolution of a vertically-related, downstream industry. We analyse two pairs of vertically-related industries, the jet and turboprop aircraft and engine industries, since the first introduction...

This paper investigates the role of skills and the division of labor among participants in collective inventions. Our analysis draws on a large sample of projects registered at Sourceforge.net, the world’s largest incubator of open source software activity. We explore the hypothesis that the...

Two opposite models are currently operating in the modern economy, the strong intellectual property rights (IPR) model, and the open source/open science model. They have traditionally been applied to alternative institutional contexts. The strong IPR model has been associated to the business...

By drawing information from a survey of inventors of 9,017 European patents (PatVal-EU), this paper provides novel and detailed data about the characteristics of the European inventors, the sources of their knowledge, the importance of formal and informal collaborations among researchers and...

The paper explores the idea that properties at the level of firms coevolve with more aggregate properties at the level of market institutions in the dynamics of industries. We propose that the structure of network of vertical relations limits the effect of increasing returns at the firm level....

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This paper studies the geographical breadth of knowledge spillovers. Previous research suggests that knowledge spillovers benefit from geographical proximity in technologically active and rich regions more than elsewhere. An alternative view explains the geographical breadth of knowledge...

A careful case study of the entire history of the turboprop engine industry (1948-1997) is offered as an example of non shakeout pattern. The persistence of high concentration is not associated to the exit of smaller manufacturers, but instead a stable coexistence of generalist and specialist...

This paper focuses on European small-medium "serial innovators" at the beginning of the 1990s and provides an empirical basis to answer the following questions: who are the upstream specialized small-medium technology producers? How are they distributed across countries? Are there technologies...