Personally I hope they never do, though it does look likely. Like many pre-November '22 old-time Mastodon et.al. fedizens, I came to the fediverse specifically because I didn't want to have anything with FB/Meta/Twitter or the other commercial, "engagement"-based, enshittified social media.
It feels like the fediverse is being gentrified, with half of it eagerly welcoming their new overlords (why don't they just join Threads?) and the other half resisting. The half that doesn't federate with Meta will move on, like people priced out of their own neighborhoods by gentrification, and become the new "real fediverse" where people can go to live free from corporate interference.