Power and media industry theory - James Curran and Jean Seaton - media is driven by the logic of power and profit.
-media is controlled by a small number of companies concerned with gaining profit and power.
-media concentration limits variety,
-social diversity = varied media products.
Regulation theory - Sonia Livingstone and Peter Lunt - exploration of media policy.
Cultural Industries theory - David Hesmondhalgh - exploration of media industries.