They have competition. There's loads of other platforms. Vid.me, Daily Motion, Vimeo.
The content creators that bring the views to Youtube need to organize and form a coalition. Until then, they're just like divided Native American tribes ready to be picked off one by one by the Union soldiers.
They need to have negotiation power with Youtube in order to stop Youtube from dicking them around.
Guys like Pewdiepie, Phil Defranco (sxephil), Sargon of Akkad(Carl Benjamin), Mark Dice, Paul Joseph Watson need a unified rep.
If they're alone they can be targeted individually. If they're unified and have rep. They could negotiate terms. Or even stage a massive switch as a nuclear option.