Media Market Concentration, Advertising Levels, and Ad Prices
CESifo, Munich, 2011
CESifo Working Paper No. 3677
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Standard media economics models imply that increased platform competition decreases ad levels and that mergers reduce per-viewer ad prices. The empirical evidence, however, is mixed. We attribute the theoretical predictions to the combined assumptions that there is no advertising congestion and that viewers single-home. Allowing for crowding in viewer attention spans for ads may reverse standard results, as does allowing viewers to multi-home.
Industrial Organisation