The purpose of this article is to inform users, regulators, and economists about the basic economics of the Internet, focusing on regulation of its infrastructure. It defines the Internet and describes its development and organization. It analyses the regulatory and competition issues associated...

We study a global game in which actions are strategic complements over some region and strategic substitutes over another region. An agent's payoff depends on a market fundamental and the actions of other agents. If the degree of congestion is sufficiently large, agents' strategies are...

The purpose of this article is to inform users, regulators, and economists about the basic economics of the Internet, focusing on regulation of its infrastructure. It defines the Internet and describes its development and organization. It analyses the regulatory and competition issues associated...

This paper provides a characterization of the set of dynamic models in which symmetric duopolists have incentives to raise a common cost. The advantage of the dynamic analysis over existing static models is that it extends the conditions (restrictive in static models) under which symmetric cost...

There has been a recent economic literature arguing that international environmental agreements (IEAs) can have no real effect, on account of their voluntary and self-enforcing nature. This literature concludes that the terms of IEAs are the codification of the noncooperative equilibrium, and...

This paper analyzes competition between firms who sell multiple products in the presence of negative externalities. The model involves two networks who each may offer several service classes. Service classes are generated by forming sub-networks differentiated by their congestion levels. The...