We analyze the interaction between entrepreneurs who open new markets and established, `fast second' firms to develop them. We use a spatially differentiated model in which early entry is traditionally excessive. However, the anticipated later entry by the `fast second' brand can potentially...

The rise of managed healthcare organizations (MCOs) and the associated increased integration among providers has transformed US healthcare and at the same time raised antitrust concern. This paper examines how competition among MCOs affects the efficiency gains of improved price coordination...

We examine market structure and optimal commodity taxation in a world in which firms produce differentiated products and can exert some degree of market power. Building on Kay and Keen (1983), we model two forms of product technologies, two forms of market entry structures, and two forms of...