This paper is a comment on Concentration in Internet Access and Entrepreneurial Truncation of Innovation by Shane Greenstein which can be found at: "http://ssrn.com/abstract=2206875" http://ssrn.com/abstract=2206875

Contractual theories of vertical integration derive firm boundaries as an efficient response to market transaction costs. These theories predict a relationship between underlying features of transactions and observed integration decisions. There has been some progress in testing these...

We address a longstanding question about the causes of creative destruction. Dominant incumbent firms, long successful in an existing technology, are often much less successful in new technological eras. This is puzzling, since a cursory analysis would suggest that incumbent firms have the...

Success breeds success in many mass market industries, as well known products gain further consumer acceptance because of their visibility. However, new products must struggle to gain consumer's scarce attention and initiate that virtuous cycle. The newest mass market industry, mobile apps, has...

The invention of new applications based on information and communications technologies (ICTs) has had two economic effects up to now. These applications have transformed production, creating value for applications-inventing companies and their customers and increasing economic growth through...

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This paper evaluates the sources of transitory market power in the market for personal computers (PCs) during the late 1980's. Our analysis is motivated by the coexistence of low entry barriers into the PC industry and high rates of innovative investment by a small number of PC manufacturers. We...

This paper discusses the results of a two-year research project on the sources of success in regional clusters of entrepreneurship and innovation like Silicon Valley. Our project has studied a number of locations, most of which have shown spectacular rates of growth of information and...

The invention of new applications based on information and communications technologies (ICTs) has had two economic effects up to now. These applications have transformed production, creating value for applications-inventing companies and their customers and increasing economic growth through...