I really doubt humans will ever create another Wikipedia. I really bet they will create another collaborative project, i.e. a project "like" it.

Current AI has bad taste. AI is OK at explaining things, to the point that humans creating an explainer like Wikipedia (which is also merely OK at explaining things, albeit better than AI) may be too little payoff for the effort. But any creative AI project, so far, is ugly. The best AI projects are "port [existing project] into X language", "decompile [existing project]", "combing [existing project] and [existing project]", "turn [existing theory] into a real project"...AI, like JRR Tolkein's evil, cannot create, only convert existing things. Even "Skate 3 in Minecraft" etc. notice that whenever the different games interact, it's lazily implemented at best, and usually broken (in a way that does not crash the game but visually is obviously wrong...because the AI has been trained to run tests, but cannot really judge visuals).

Which is to say, I bet collaborative creative projects are here to stay. AI will even boost them, by creating the software foundation to make new things - an AI flash, AI game engine, AI metaverse, AI design studio that gives the user fine control (not just rerunning the same prompt praying for a mediocre output, or trying to make progress with small changes but failing when each one breaks something else). AI, frankly, supersedes Wikipedia (whose primary purpose is finding information; just ask the AI, then follow up on whatever you're confused or want to know more about). But AI cannot recreate the magic of collaboration, nor come close to the art of, say, r/place - which I expect to have similar if not nearly-exact successors of (if Reddit retries r/place I expect it to suck, but that's less AI and more Reddit's terrible management driving away quality users...who aren't going extinct, just need a decent platform to grow on).