I remember when Thom Hartmann's ratings were higher than Rush Limbaugh's, Clear Channel changed the progressive formats on all their radio stations, because they feared progressive radio's growth in popularity and the anti-corporate message of "people before profits" that Progressive radio advocated. They in effect killed the option to listen to the progressive viewpoint in radio programming. By doing so they guaranteed that conservatives controlled the narrative people could listen to.
Same thing was done to Michael Moore's TV shows..