What I've wanted for a while now is a browser extension that adds a button on youtube video pages, where you click on it and it does yt-dlp downloading but saves it to something like ipfs and posts it to some free video site for indexing. Basically, there should be a video indexing/search/discovery protocol (don't care if it's still http) where random people can submit metadata and a link to a distributed content-add…
Super-charging this idea with IPFS is even better. Essentially a collective Internet Archive will be created with every version of every page someone has decided they are interested in, for whatever reason.
This kind of thing would be perfectly feasible with the web as it was designed, which was designed with caching in mind.
But, of course, big corporations like Google will fight hard to stop such a thing happening because they don't want you in control. They want to be in control. They hate peer to peer technologies because they can't control them.