A "Library of Congress" for published web content maybe. Some sort of standard that allows / requires websites that publish content on oublic-facing sites to also share a permanent copy with an archive, without having the archive have to scrape it.
Sort of like how book publishers send a copy to the LoC.
I'm right there with you. I'd love to see the dream of the decentralized media return, but it's long-dead. The "Normal" user doesn't give a fuck about the benefits and even the moderate barrier to entry over some centralized platform is enough to keep them away.
Tech-minded people seem to often forget that even the most simplistic choices like "Choose an instance" is a big deal for people. The platform that's the most familiar, and easiest to use is going to be the one that wins, and, right now, that looks like it's Bluesky.