Market concentration and competition in OECD mobile telecommunications markets

This study analyses the progress of market concentration in OECD member states' mobile telecommunications markets and evaluates the relationship between market concentration and performance. Using annual panel data from 24 OECD member states for the 1998-2011 period, the study estimates regression equations for market concentration, mobile prices and profits. The empirical results indicate that the more concentrated the mobile market, the higher the prices and profits, providing support for the market power hypothesis. If this hypothesis holds, then market concentration can be a useful indicator of market performance. On the other hand, the applicability of the hypothesis is unclear for the second half of the sample period. The results provide evidence that regulatory policies influence the structure and performance of mobile markets.