Wikipedia is not a Big Tech nor a commercial enterprise prone to enshittification nor it profits from surveillance capitalism. We don't need another, competing, universal source of enclopedical information. Wikipedia, on contrary to X, Reddit, Facebook, etc. is not going anywhere. Any self-styled Wikipedia alternative ended up dead, thematic, or biased by design.
However there are many thematical and fan wikis hosted on Fandom, which itself is a commercial company and there were already some contoversies concerning it. Wikis on Fandom are very resource-intensive compared to Wikipedia or independent thematical wikis.
Ability to edit at several wikis from the same account without being tied to Fandom could be one of things that Ibis offers and could benefit independent wiki sites.
And of course, MediaWiki is free software and federation could be added as a functionality.