evaluation is also justified in a Cournot-oligopoly with free but costly entry. If input markets are competitive and output per … firm declines with the number of firms (business stealing), there is excessive entry into such oligopoly. If trade unions … raise wages above the competitive level, output and profits per firm decline, which could deter entry and thus improve …

. That includes mergers that are known to be unprofitable in the corresponding static equilibrium framework. …

Standard media economics models imply that increased platform competition decreases ad levels and that mergers reduce … assumptions that there is no advertising congestion and that viewers single-home. Allowing for crowding in viewer attention spans …

economic theory prescribes that the advertising volume can be optimally reduced by levying a tax on ads. However, making use of … recent advances in the theory of Industrial Organization and two-sided markets we show that taxing ads may be …

oligopoly. We find that in the short run, i.e. when the number of firms in both markets is exogenous, the results concerning tax … undershifting are more pronounced, potentially to a very large extent. Instead, in the long run under endogenous entry and exit … overshifting of both taxes is more likely to occur and is more pronounced under upstream oligopoly. As a result of this, a tax …

A well-known result by Vega-Redondo (1997) implies that in symmetric Cournot oligopoly, imitation leads to the …