Koski and Kretschmer have presented a large review of the recent literature on network industries, particularly on market structure, firm strategies and public policies. They provide a very useful summary of the main papers and highlight some important conclusions, in particular in the context of the policy debate. My objective in this paper is to provide short and limited comments on the first two parts, on market structures and firm strategies, and to discuss more the last section, on public policy issues, in particular on the basis of the competition policy aspects of the new regulatory framework for electronic communications.