We analyze incentives to develop entrepreneurial ideas for venture capitalists (VCs) and incumbent firms. If VCs are sufficiently better at judging an idea's value and if it is sufficiently more costly to patent low than high value ideas, VCs acquire valuable ideas, develop them beyond the level...

This paper introduces endogenous and directed technical change in a growth model with environmental constraints. A unique final good is produced by combining inputs from two sectors. One of these sectors uses "dirty" machines and thus creates environmental degradation. Research can be directed...

We analyse an economy where managers engage both in the adoption of technologies from the world frontier and in innovation activities. The selection of high-skill managers is more important for innovation activities. As the economy approaches the technology frontier, selection becomes more...

The geographical sources of innovation of firms have been hotly debated. While the traditional view is that physical proximity within city-regions is key for the innovative capacity of firms, the literature on ‘global pipelines’ has been stressing the importance of establishing communication...

How does firm entry affect innovation incentives and productivity growth in incumbent firms? Micro-data suggests that there is heterogeneity across industries - incumbents in technologically advanced industries react positively to entry, but not in laggard industries. To explain this pattern, we...

Creative cities are seen as important sites for the generation of new ideas, products and processes. Yet, beyond case studies of a few high-profile cities, there is little empirical evidence on the link between local creative industries concentration and innovation. This paper addresses this gap...

Stimulating entrepreneurship is high on the policy agenda of many countries. We study the effects of tax policies on entrepreneurs’ choice of riskiness (quality) of an innovation project, and on their mode of commercializing the innovation (market entry versus sale). Limited loss offset...

In industries with network effects, incumbents’ installed bases create barriers to entry that discourage entrepreneurs from developing new innovations. Yet, entry is not the only commercialization route for entrepreneurs. We show that the option of selling to an incumbent increases innovation...