As you've probably heard, Threads (a fairly new social network from Facebook's parent company Meta) is testing integration with the fediverse. Depending on how you look at it, it's a great opportunity, a huge threat, or both!
So how would they take PixelFed, Mastodon, Lemmy & Kbin / Mbin? They can only try add a feature and if the rest of the Fediverse doesn't like it, they won't add it to there own platforms,
It's not so much that they'd take it over, it's that they'd extend it (in incompatible ways) and exploit it. XMPP still exists and there are bunches of clients for it, but it's basically where it was 15 years ago when Google et al first adopted it. Ploum's got some great pespectives on the XMPP experience at https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html and there are a lot of parallels.
So like I said, if people don't like what they add, we just won't add it. Why should we bend over backwards, also EEE is a Microsoft thing more than anything. It won't kill decentralisation it would just prove that companies like that are shit.
Having read that article earlier in another thread, it sounds much more like the devs working on XMPP killed it themselves by cowtowing to whatever the fuck Google was doing instead of continuing their own forks because they didn't want to lose the users gained through Google Talk by simply not caring about it. Greed killed it, but the greed wasn't Google's alone.