Abstract
The first part of the paper uses GMICP data to measure the degree of concentration in the various telecommunications, Internet services, and media markets, as well as changes in the relative sizes of these markets. Concentration levels and trends in market size are highly differentiated from one market to another, while the finesse of the data collected using the GMICP methodology makes it possible to analyze problematic situations while overall market concentration levels remain moderate. The second part, dedicated to discussion, identifies how the data collected within GMICP can contribute both to understanding the industrial, cultural, ethical, and political developments of these activities and to the contentious public debates in France on concentration, its challenges, and the necessary transformations in regulation. The theoretical framework is that of cultural industry theory, which is closely aligned with GMICP's objectives and methodology.
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