Twitter has shown that there is an audience for companies (and apparently presidents) engaging via public social media.
Corporations rely on algorithms to get attention on their eyes, and it's especially convenient to have everyone on the internet on a 'central hub', where you can make sure the most people have a chance to get hooked on what you do (this is also the case for smaller creators like digital artists)
as Twitter proves unreliable I imagine corporations as well as smaller freelancers will work to give Meta's alternative some legitimacy in the public's eyes so that they're not shit out of luck
Though Meta's bleeding money as it is, they might not be the horse worth betting on anyway.