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...

The paper briefly sketches alternative models of dealing with principal-agent problems and compares major characteristics of bank-oriented versus marketoriented systems of corporate governance. The ownership structure in Germany is contrasted with evidence for other industrial countries. This...