I'm guessing that most commenters here didn't read the article, and the headline itself was abridged by omitting the word "quite" in "quite like". The article isn't saying that nothing vaguely shaped like Wikipedia will ever be created again. It's saying that there will probably be no room for a similar human-written effort because the internet is morphing into something not conductive to having human-curated websites in the first place:

"AI’s absorption of Wikipedia means that more people than ever are reading its content. Yet it also means that fewer people are visiting the site itself. When a Wikipedia link is suggested by a search engine, nearly a tenth of users click through. When Wikipedia is cited by an LLM, the clickthrough rate is only 0.33% (and not all credit their sources)."

Individuals may keep blogging out of the force of habit or to cater to narrow / walled-garden audiences, but there aren't that many people you can attract to a planetary-scale project with the pitch of "let's edit a training dataset for OpenAI together". We're taking away the motivation of trying to make something useful and good.

Some folks are saying that AI will only accelerate the creation of future Wikipedias, and that's obviously missing the point. Yes, there might be Grokipedia-style entities, probably a number of them.