A media conglomerate, media group or media institution is a company that owns large numbers of companies in various mass media such as television, publishing, radio, movies, and the internet.
The walt Disney Company is America's largest media conglomerate in terms of revenue
there is concentration of ownership, reducing diversity in ownership and standardization of culture
Some nations can influence and control their media greatly. In addition,
powerful corporations also have enormous influence on mainstream media.
The idea of corporate media itself may not be a bad thing, for it can
foster healthy competition and provide a check against governments.
However, the concern is when there is a concentration of ownership due to the risk of increased economic and political influence that can itself be unaccountable.