' entry decisions in the past. We find that instrumenting is particularly important for estimating the effect of competition …

' entry decisions in the past. We find that instrumenting is particularly important for estimating the effect of competition …

We develop a model of R&D competition between an incumbent and a potential entrant with network externalities and …

This paper analyzes the impact of network externalities on R&D competition between an incumbent and a potential entrant …&D competition intensity. …

shown that network externalities positively affect the incentives to invest in R&D. In the model, competition resembles a … single firm dominates the market (i.e. wins the race), short-run competition is very fierce and concentrated on neck …-and-neck technological configurations. This short-run competition is fiercer and longer, the higher the level of network externalities …

in retailer service. A decomposition of the price differential reveals that there may indeed be a competition effect. …

The economic effects of environmental taxes depend on the market structure. Under imperfect competition with free entry … unilaterally introduced carbon tax under both perfect and imperfect competition. Our key finding is that induced structural change … in favor of the less energy intensive, more labor intensive industries is more pronounced under imperfect competition …

their investments. Competition is, however, not localized within a market segment and the class of new or old models, i …

competition within the game's product niche. We identify game niches by genre, age-appropriateness, a four week window cohort … during periods of fierce intra-niche competition. We show that games are more likely to be released so as to avoid weeks when …