Marshall W. van Alstyne

Learn More
centered on a large database, but in this case it is entirely of living organisms, the marine bivalves. Over 28,000 records of bivalve genera and subgenera from 322 locations around the world have now been compiled by these authors, giving a global record of some 854 genera and subgenera and 5132 species. No fossils are included in the database, but because(More)
Platform-mediated networks encompass several distinct types of participants, including end users, complementors, platform providers who facilitate users’ access to complements, and sponsors who develop platform technologies. Each of these roles can be opened—that is, structured to encourage participation—or closed. This paper reviews factors that motivate(More)
Information technology can link geographically separated people and help them locate interesting or useful resources. These attributes have the potential to bridge gaps and unite communities. Paradoxically, they also have the potential to fragment interaction and divide groups. Advances in technology can make it easier for people to spend more time on(More)
Introduction Information workers now account for as much as 70% of the U.S. labor force and contribute over 60% of the total valued added in the U.S. economy (Apte & Nath 2004). Ironically, as more and more workers focus on processing information, researchers have less and less information about how these workers create value, and managers have greater(More)
We study the fine-grained relationships among information flows, IT use, and individual information-worker productivity, by analyzing work at a midsize executive recruiting firm. We analyze both project-level and individual-level performance using: (1) direct observation of over 125,000 e-mail messages over a period of 10 months by individual workers (2)(More)
Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships,(More)
Results of this research concern incentive principles which drive information sharing and affect database value. Many real world centralization and standardization efforts have failed, typically because departments lacked incentives or needed greater local autonomy. While intangible factors such as "ownership" have been described as the key to providing(More)
If communication involves some transactions cost to both sender and recipient, what policy ensures that correct messages – those with positive social surplus — get sent? Filters block messages that harm recipients but benefit senders by more than transactions costs. Taxes can block positive value messages, and allow harmful messages through. In contrast, we(More)