This paper investigates firms’ incentives to innovate in Next Generation Access Networks. The market is initially asymmetric because one firm owns an "old" technology. This operator or its competitor may invest in a new access network. We focus on regulation of the old technology and show that...

This paper considers duopolists targeting informative messages to consumers who share information locally with their network neighbors. A monopolist targets a parsimonious set of nodes that informs all consumers either directly or by word-of-mouth. A duopolist faces a tradeoff between this...

In this paper we analyze a network market in which it is beneficial for a producer to invite competitors to share a market, even when this is not needed in order to affect consumer beliefs. Because of the nature of such goods, the demand curve for network markets typically rises and then falls....

This paper reviews recent developments in online and mobile banking in the United States that provide bank account holders with low-cost interfaces to manage account-to-account electronic money transfers. The paper analyzes the emerging decentralized market in which A2A money transfers are...

We present an economic experiment on network formation, in which subjects can decide to form links to one another. Direct links are costly but being connected is valuable. The game-theoretic basis for our experiment is the model of Bala and Goyal (2000). They distinguish between two scenarios...

We study models of the formation of citation networks in a setting where authors/firms care about their citations and are rational. The effect of these two features on the diffusion of useful ideas in a setting with complete information about past citations leads to multiplicity of equilibria....

This paper uses both a discrete choice demand model and a direct survey method to derive robust measures of the contribution of home broadband to consumer welfare during the early years of broadband adoption by U.S. households. We estimate a demand system that distinguishes between cable, DSL,...

Regulators have proposed various institutional alternatives to secure network resource adequacy and reasonably priced electric power for consumers. These alternatives prompt many difficult questions: Does the development of Demand Response reduce the need for new capacity? How effectively can a...

Individuals' cognitive knowledge of their social networks is affected by systematic biases. This paper investigates the role of the mean degree bias, i.e. the tendency to underestimate the number of connections of others, in determining the structure of stable networks. It develops a strategic...

The flourishing internet-based trade motivates our model of two-sided markets with multilevel mediation, in which a seller, intermediaries at various levels and buyers are embedded in a symmetric tree. Adapting the framework of the single-unit first price auction to trees, we show, in...