Or - as many of us hope for - we manage to make the economics of the fediverse work (don’t forget to support your instances, people) and the most valuable users move to blissful ad-free places like Lemmy and Mastodon.
Indeed, throw in open-source AI (thanks, weirdly, to Zuckerberg) and Wikipedia and you can start to see the contours of a post-advertising internet.
xkcd still has the best approach to this; four random common words