It's called private property. YouTube can do what it wants on its private platform. It's not a monopoly. There are other video platforms.
The left owns the online media, and they ban all non-left thought.
Meanwhile, if you try to speak in person, the cops come and beat you up.
Of course, if Google doesn't approve your content, nobody can find it, and if Cloudflare doesn't approve of your content, it isn't actually online.
And, with everybody locked up, you can't go advertise it in the physical world.
So, basically, unless Google and Cloudflare like your content -- or the major media bullies them into liking your content -- your content does not exist.