Yes, but even if they take him to court, it's highly likely that Musk and his legal team drag this out. It's not going to be a simple case. No contract law case ever is. And at that point, Twitter's business might keep suffering, to the point that their fair market value plummets, and they enter a very difficult financial situation. Then Musk can swoop in with a much lower price offer and they will accept simply due to their financial position and not being able or willing to continue the case in the courts. I think Musk will end up buying Twitter but at a much lower price.