In this paper, we explore the hypothesis that an important force behind the collapse in advertising revenue experienced … introduce a model of the market for advertising on news media outlets whereby news outlets are modeled as competing two … equilibrium outcomes in the advertising market. One consequence is that multi-homing on the part of advertisers is heterogeneous …

This paper investigates how the tying of complementary products can be used to preserve and extend monopoly positions …. We first show how a firm that is a monopolist of a product in the current period can use tying to preserve its monopoly … monopoly position into a newly emerging market. The analysis focuses on the importance of entry costs and network externalities …

absolute margin. We derive these results in both a monopoly model and a variety of different competitive models. We conclude …

, because they intensify price competition too much. Multi-product monopoly can lead to better design incentives than the non …

advertising agency industry? This question is addressed by treating an advertising agency as a multiproduct firm. The firm … advertising messages which it creates on behalf of its clients. Evidence is presented indicating that the structure of demand and … costs in the advertising agency industry conforms to the conditions that MacDonald and Slivinski (1987) showed were required …

the national level, of the effects of magazine advertising on ST use. The focus on magazine advertising is significant …-specific advertising information over the sample period. This allows detailed and salient measures of advertising exposure at the … these tobacco products. Sub-analyses point to some differences in the advertising and tax response across segments of the …

for commercial plastics. Commentators have suggested that the incumbents may have preserved the monopoly outcome by gaming … post-remedy years. Such inelastic demand is inconsistent with monopoly, suggesting the remedy may have been effective …