I think your examples help prove the parent comment's point. Each of those companies faced a reckoning when they weren't able to deliver on their promises.
It is very possible that there will be action against Mr. Neumann. Any court of competent jurisdiction would likely rule that he was in breach of his fiduciary responsibility. There are even richer people who are not happy with him, who can hire even bigger armies of lawyers to make his life hard. I'm guessing they'll wait until they've got the company locked down and him out, then start going after him.