A generation ago, or two, when there were three channels, plus PBS, and when you needed - when you needed 15 million people to make a living, the media could focus on the broad country. And most people had no choice about getting political information. It was there at 6:30 whether you wanted it or not.
If you go on TV and say there's no other country in the world where you can be born poor and become rich, you get a huge megaphone. If you tell the truth, which is that most of the studies show actually the United States is worse than anybody except Britain in upward mobility, there is no audience for you.