How did the diffusion of the Internet affect performance and product quality in the airline industry? We argue that the shift to online distribution channels has changed the way airlines compete for customers - from an environment in which airlines compete for space at the top of travel...

This paper uses a unique individual transactions data set to investigate the effects of internet purchase on the prices paid for individual airline tickets. The analysis also investigates the effects of changes in the percentage of online transactions on both online and offline prices and on...

This paper provides an insight into the antitrust investigation initiated by the French competition authority, which found that mobile operators exchanged strategic information and agreed to fix market shares in years the 2000-2002. The empirical analysis is based on the comparison of mobile...

This article assesses the unilateral e ects of a merger in the Portuguese mobile telephony market. We use aggregate quarterly data from 1999 to 2005 and a nested logit model to estimate the price elasticities of demand and the marginal costs of subscription to mobile services. We nd that mobile...

This article assesses the unilateral effects on prices of a merger in the Portuguese mobile telephony market. We use aggregate quarterly data from 1999 to 2005 and a nested logit model to estimate the price elasticities of demand and the marginal costs of subscription of mobile telephony. Given...

We approach the issue of the value of a platform to a seller in a two-sided market where both buyers and sellers multi-home. A seller that loses access to a major buyer platform can potentially incur substantial financial losses. We exploit a recent conflict between American Airlines and two...

In this paper, we study how the presence of a news aggregator affects competition among (horizontally differentiated) newspapers in the Internet. For this purpose, we build a model of multiple issues which allows each newspaper to choose quality on each issue. Our model provides a micro...

One of the most salient issues faced by platforms like newspapers and credit card issuers is that users are heterogeneous in the value they bring to other users or to the platform. We develop a model with multi-dimensional heterogeneity where a monopoly platform chooses (price or non-price)...

As a common practice, various firms initially make information and access to their products/services scarce within a social network; identifying influential players that facilitate information dissemination emerges as a pivotal step for their success. In this paper, we tackle this problem using...

Abstract I model dynamic product design along price and non-price dimensions by a firm in a market with positive network externalities between consumers. In the case of a usage fee, I provide conditions under which the steady state (SS) is unique and show that the introductory price is negative...