If people hosted video elsewhere, I would gladly never visit youtube again.
Creators are not going to start paying for uploads when they can push their costs to the viewers.
If I "blamed" the creators, you'd be telling me it's not their fault, they're just incentivised by the system, they're just playing the game.
But when I "blame" the system, you're telling me the system is not at fault, that it's individual choice to choose a near-monopoly on video discoverability that is propelled by and heavily benefiting from the same company's actual monopoly of search.
Is it "YT's problem?"? No, it's to YT's massive benefit, it's my problem when I have to suffer through adverts.