This paper provides a first pass at comparing two polar strategies for market intermediation: "merchant" mode - buying from sellers and reselling to buyers - and "two-sided platform" mode - enabling affiliated sellers to sell directly to affiliated buyers. The merchant mode is more profitable...

Static demand models for homogeneous network goods give rise to fulfilled-expectations equilibrium demand (FEED) curves, which, contrary to normal demand curves, may be upward sloping at certain intervals. We analyze some, as yet unexplored, properties of the FEED curves. We spell out the...

Can indirect network effects lead to adoption externalities? If so, when? We show that in markets where consumption benefits arise from hardware/software systems, adoption externalities will occur when there are (i) increasing returns to scale in the production of software, (ii) free entry in...

Internet-based technologies are revolutionizing the stodgy $625 billion global advertising industry. There are a number of public policy issues to consider. Will a single ad platform emerge or will several remain viable? What are the consequences of alternative market structures for a web...

Lecture on the first SFB/TR 15 meeting, Gummersbach, July, 18 - 20, 2004We develop a general theoretical framework of trade on a platform on which buyers and sellers interact. The platform may be owned by a single large, or many small independent or vertically integrated intermediaries. We...

We examine the effect of competition on investment decisions in an industry in which each firm has a completely irreversible investment opportunity and the product market has positive externalities for a small market size and negative externalities for a large market size. In the latter case,...

Positive network externalities can arise when consumers benefit from the consumption of compatible products by other consumers (user-positive consumption externalities) or, alternatively, when they incur costs from the consumption of incompatible products by other consumers (nonuser-negative...

This paper highlights how the provision of information about user participation can serve as a strategic marketing tool for firms seeking to grow two-sided exchange networks. A two-sided exchange network is a business model (such as Ebay or Craiglist) where revenue is generated from persuading...

The matching of individuals in teams is a key element in the functioning of an economy. The network of social ties can potentially transmit important information on abilities and reputations and also help mitigate matching frictions by facilitating interactions among ¿screened¿ individuals. We...

Globalization has affected the integration of markets through many different channels, including movements of factors and trade in goods. From a theoretical point of view, the interaction between the different channels of integration can take different forms. The aim of this paper is to analyze...