concentration of media ownership
Agenda-setting theory
Alternative media
Big Three television networks
Deregulation
Democratic backsliding
Dispersal of ownership
Gleichschaltung
Lists of corporate assets
Local News Service
Media cross-ownership in the United States
Media democracy
Media imperialism
Media transparency
Monopolies of knowledge
Network neutrality
Old media
Partido da Imprensa Golpista
Politico-media complex
Prometheus Radio Project
Propaganda model
Retail concentration
State controlled media
Transparency of media ownership in Europe
https://en.wikipedia.org/wiki/Concentration_of_media_ownership