We explore the separation of powers between the legislative and the executive branch of government as a way of overcoming the dynamic consistency problem of regulatory policy towards investment. We model the industry as a regulated duopoly. The incumbent is a vertically integrated firm that owns...

In a four-treatment experiment, we test some of the hypotheses inGarcia-Gallego et al.(2004) concerning competition among a number offirms of which some (or all) are indexed by a price-comparison enginefacilitating buyers' search process. In this paper, we isolateindividual behavior from noise...

In Portugal, the telecommunications incumbent offers broadband access tothe Inter- net, both through digital subscriber line and cable modem. Inthis article, we estimate the impact on broadband access to the Internetof the structural separation of these two businesses. We use a panel ofconsumer...

We analyze firms' incentives to bundle and tie in the telecommunications industry. As a first step, we develop a discrete-choice demand model where firms sell products that may combine several services in bundles, and consumers choose assortments of different types of products available from...

We analyze firms' incentives to bundle and tie in the telecommunications industry. As a first step, we develop a discrete-choice demand model where firms sell products that may combine several services in bundles, and consumers choose assortments of different types of products available from...

In this article, we propose a very simple methodology to evaluate the impact on prices and costs of the entry of a firm in a market, and apply it to the entry of a third firm in the Portuguese mobile telephony industry. Using quarterly firm level data, we characterize the evolution of the firms'...