They took off Alex Jones, not for ideological reasons, but because he was blatantly lying about people being pedophiles; this was after years of accusing school shooting victims of being liars . If you can't see how that's a violation of a terms of service, I really don't know what it would take to convince you.
YouRube is FAR past critical mass. It IS online video. And I can’t think of anything you could do short of shutting the site down that would fix that and give competitors a level playing field.
The reasoning is that stripping YouTube of Alphabet's deep pockets from advertising would give competitors a chance to monetize as well as YouTube, without fearing that Google will choke off their air supply to preserve YouTube's dominance.
It might not be enough, but it would be a start.