The creators I watch aren't making their income from YouTube, even when that is their only main platform. Patreon and video sponsorships through direct deals/ad networks are the bulk of it, in a lot of cases.
It's amusing to me how we keep reinventing existing models but consider them a totally new thing because "on a computer" kind of thing.
Some amount of reinvention seems necessary, the cost model of video hosting (without just making it a public service) changes the maths a fair bit.