The plan is to create a non-level playing field favoring conservative ideas. They sell it and resell it every day by keeping the product fresh in the consumer's mind.
Real leftists are an extinct species in the mainstream media.
The firing of Jim Hightower by ABC, immediately following the Disney acquisition, was like the passing of the last carrier pigeon, or dodo bird. The pitiful moguls are of course in the supremely privileged position of being able to create their own rightwing news and commentary operations and exclude those that don't meet their political standards. Murdoch personally funded the new conservative magazine The Weekly Standard, and he has placed Roger Ailes in charge of his new cable news service. He has also welcomed to TCI cable Pat Robertson's Family Channel and the new, exclusively rightwing Empowerment Channel. The pitiful giant was exercising raw economic power in pursuit of his political agenda, but the liberal media didn't notice or complain.