If youtube stopped allowing sponsored segments that puts pressure on the market to produce such a thing. Even now creators are trying to come up with alternatives. Nothing has panned out, but something like stopping sponsored segments could very well tip a large number of people who want to get paid to find another way to get paid.

So what, even despite high-profile creators such as Practical Engineering constantly pushing for Nebula (the largest of them), it's still a fraction of their YouTube following.