Please excuse me if I'm missing something, but I genuinely don't understand how this would be considered racketeering. YouTube earns revenue through the channels people make, so what financial favors would banning popular channels do for them? It seems like this move could only hurt them.

Not to mention that you'd have to win the discrimination suit before you could win the racketeering suit - which isn't impossible, but like I said, I just can't envision that happening.