The global http network already encompasses all video-hosting sites. If YouTube were a cluster of PeerTube nodes nothing really changes, all the stated problems associated with YouTube's popularity remain. e.g. if YouTube nodes ban your videos and you have to move to a less popular node, you're facing the exact same problem as you would getting banned from YouTube today.
> The global http network already encompasses all video-hosting sites.
So does the universe. I don't really think this is a relevant observation, given we're talking about user behaviour.
> if YouTube nodes ban your videos and you have to move to a less popular node, you're facing the exact same problem as you would getting banned from YouTube today.
Except users can move to KnockoffTube and still see YouTube videos. A school could use EduTube or ScholasticTube (hypothetical curated educational-resource sites) and not get recommended “video game unboxing” videos in the sidebar – and they wouldn't have to search on EduTube and ScholasticTube separately, because if something's on one it's on the other (modulo some minor curation decisions).
You could also solve this issue by curating search engines, but there are barriers to that; the idea of a search engine has been around for ages, and yet very few curated search engines exist. (Plus, you still have the “autoplay Flat Earth videos” issue, unless you proxy the video in your search engine, in which case congratulations! you've made a video platform.)