What amazed me is that they were able to cram a graphical client into a Commodore 64. Now that was a cram job. I could see doing the world on minicomputer servers, but the client!
Those early 2D metaverses not only predate the consumer Internet, they predate AOL. They were all superseded by things that looked more like the early web.
Round 2 of that was when 3D Second Life was overtaken by mostly-text Facebook.
Recently we had the Web 3 "metaverse" debacle. You can build it, but will they come?
These things are fun, but they're a niche, like games.