Jacob Weisberg writes:

That Rupert Murdoch may skew the news rightward more for commercial than ideological reasons is somewhat beside the point. What matters is the way that Fox's successful model has invaded the bloodstream of the American media. By showing that ideologically distorted news can drive ratings, Ailes has provoked his rivals at CNN and MSNBC to experiment with a variety of populist and ideological takes on the news. It's Fox that led CNN's Lou Dobbs to remodel himself into a nativist cartoon. It's Fox that led MSNBC to amp up Keith Olbermann. Fox hasn't just corrupted its own coverage. Through its influence, it has made all of cable news unpleasant and unreliable.