So there's the possibility that BS will “play nice” while the only significant alternatives are initiatives like Blacksky and Northsky (sp?), but possibly not so much if, say, Meta tries to add AT Proto support to Threads, for example.
That being said, I agree with @ana's prediction. And hopefully in the mean time the Fediverse manages to fix its major technological pain points (like data portability), although I fear that might need taking down Mastodon leading position a notch or two.
2/2