>I also think it would take some doing to get advertisers to jump on a new platform when YouTube has almost all the viewers.
Volume isnt even your main issue here. YouTube ads are powered by adwords... that all advertisers already use. It comes with tracking and user-analytics built in.
You can't compete with YouTube by replicating this business model.
Even so.. direct YouTube ad revenue per view is low. Many successful tubers monetize with sponsors. That is replicable, if a (single) tuber has enough views.
I think there can be markets for smaller, paid video sites... but that's not really a competitor to YouTube. It's more like competition for substack.
The way YouTube is managed, including all the reasons for criticism, are why it is successful.
Legible rules have loopholes. Keeping advertisers "on their toes" with mystery rules is a strategy.
It makes sense to keep the platform as unoffensive as possible. Strict nudity rules, and other such "hard" rules. Demonetization gives yotube a chance to implement soft/illegible rules... many of them simply assumed or imagined. It also makes business sense to suppress politics a little. The chilling effect is intentional..
and understandable.
Honestly, I think the more open alternative to YouTube is podcasting. Podcasting has terrible discovery, and video is underdeveloped but... it also has persistence that proves it is a good platform.
Half of "the problem" with YouTube is Google running the platform and pursuing their own interests. These are somewhat restrictive, but they also make sense.
The other half is intense competition for daily attention. That's what a low friction, highly accessible platform does. You can't have everything.
Without all the restrictions and manipulations that YouTube do, the platforms would be 100% nudity, scandals and suchlike.