This book deals with market concentration trends in the information sector as a whole. Its thesis is that similar dynamics take place across industries, including mass media, and that they lead to further media concentration trends. It looks at the size of the major segments of the information sector: mass media, telecommunications, information technology, and the Internet. Combined, the United States information sector accounts for over one trillion dollars, not including its considerable exports to other countries. The chapter presents final averaging across all 100 information sector industries, and also across the twenty-seven mass media industries that have been investigated here. The chapter gives an interpretation of this. National concentration, horizontal concentration, and vertical concentration as well as media conglomerates and ownership are discussed.
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