twitter was "acquired" by xAI which was then "acquired" by SpaceX as part of the IPO strategy, (and part of a strategy of giving the investors on the hook for the twitter acquisition a return). Who knows how it performs, but yeah, now that it's the social media arm of the SpaceX conglomerate, it will likely be around for a long time, especially since it serves the basic function of stroking Musk's ego.