Ads and monetization have ruined the internet compared to what it was. Early Internet was completely without ads, and things were run by people who were actually interested in the content presented, not in profits.
How early are we talking here? If you mean pre-Web, in the Usenet era it was standard practice to pay a subscription to join a Usenet server. If you mean the early Web, ads were already everywhere by the mid-90s.
I reckon it’s simpler than that. Zuckerberg has never really invented anything novel; Facebook was a straight clone of a whole bunch of competing social media sites (which just so happened to win the numbers war), and WhatsApp and Instagram were both acquisitions.
I think the Metaverse was Zuckerberg trying to prove to himself and others that he and he personally could come up with the “next big thing”. The fact that he came up with something which absolutely no-one wanted (and most people barely understood) is a testament to why he never came up with anything ground breaking before, too.