But now, these big corporations can bluntly do what they did. And now we can't do anything about it. A perfect example of what they can do now, is what Jon Stewart was talking about, on Jan. 23 (I think). John Oliver represented a corporation, which aired a commerical about Jon Stewart, claiming he was a molestor, and other bull. The thing was, Stewart couldn't say anything about, because thats the nature of advertisement.
The problem I foresee, is politicians making deals with corporations to support certain bills in return for vicious campaigns against political rivals. I'm sure politicians on both sides of the political spectrum would do this, because its just good business. And from what I can tell, it would be perfectly legal, and the layman would be ill-suited to discern fact from fiction.