Maybe what the market needs is a Substack or OnlyFans-style monetization site for video. This would have the effect of smoothing out revenue streams for creators. I am sure it exists a few times over...
Nebula is probably the biggest and most mainstream, but like Floatplane it has a certain kind of niche it serves, and typically only existing fans of the channels that are available on it join, it doesn't have the same kind of audience that can sustain new content creators who don't already have an audience elsewhere.
For most creators this is the wrong monetization model, or they do it very poorly (E.g. paywall content no one wants to see). Launching merch/products and/or doing brand deals is much more effective.