Which monopoly? The video creator is free to host their video on whichever machine they want.
So where else would asianometry content fit?
Nebula perhaps? Or self-hosted?
I'm not sure that makes YouTube a monopoly. Just like some games work best on the Nintendo Switch doesn't mean Nintendo has a monopoly on console gaming.
By that standard, there's no such thing as monopoly. If you think there is one, you're always free to start your own country.