Economic analysis of process innovation : the case study of the German telecommunication market

The effects of a new firm's entry into the telecom service market are examined further. These consist of up- and downstream markets, corresponding to the first and second stages in game theory. When a new entrant can succeed in process innovation and lower production cost, entry of the entrant transforms the market structure into a Joint-Profit-Maximization monopoly under the European Commission (EC) constraint. However, the post-entry market becomes more competitive if the EC did not intervene the market. We observed that violation of the test does not necessarily mean the incumbent practices a margin squeeze. The EC does not prove that margin squeeze is a necessary and sufficient condition for the exit. Furthermore, Joint-Profit-Maximization monopoly can serve to explain why Japanese Telecoms fees are high.