Of course, not for the petty reasons that you list. Sama has comprehensively explained why the original OS model did not work, and so far the argument – it's very expensive – seems to align with a reality where every single semi-competitive available LLM (since they all pale in comparison to GPT-4 anyway) has been trained with a whole lot of corporate money. Meta side-chaining "open" models with their social media ad money is obviously not a comparative business, or any business. I get that the HN crowd + Elon are super salty about that, but it's just a bit silly.
No, Sam's failure as CEO is not having done what is necessary to align the right people in the company with the course he has decided on and losing control over that.
It's like a real-life example, i.e. what would you do if you were in the CEO's position?