Media critics such as Robert McChesney, [2] Ben Bagdikian, [3] Ralph Nader, Jim Hightower, [4] Noam Chomsky, Thom Hartmann, Edward S. Herman, Amy Goodman and Bernie Sanders[5] suggest that such a media system, especially when allowed to dominate the mainstream media, inevitably will be manipulated by these same corporations to suit their own interests. These critics point out that the main national networks, NBC, CBS, and ABC, as well as most if not all of the smaller cable channels, are owned, funded, and controlled by an interconnected network of large corporate conglomerates and international banking interests, which may manipulate and filter out news that does not fit their corporate agenda. Media companies are slowly understanding how to accelerate the fluidity of media content across delivery channels to "expand revenue opportunities, broaden markets and reinforce consumer loyalties and commitments".[6] Users are then understanding how to master these various media technologies to bring the flow of media more fully under their control and to interact/co-create with other users. Sometimes, these two forces reinforce each other, creating closer, more rewarding, relations between media producers and consumers. Sometimes the two forces conflict, resulting in constant renegotiations of power between these competing pressures on the new media ecology.