This is very interesting. You wouldn't normally hire an investigator to dig into a corporate shitshow. Firing of Sam Altman was a huge mess, but if there was a serious reason to do that (like, frauding the board), and that reason would be backed by investigation report, it'll suddenly make board actions much more justifiable. And it'll put Microsoft into a tough spot, because they hired Altman back without any considerations whatsoever...
If the investigator finds the board was wrong, it makes the new CEO an enemy of the board. If the investigator finds Sam Altman did bad things, it makes Microsoft look bad and incompetent for hiring him; MS is OpenAI biggest client.
And if, as is likely, the investigator finds some blame here and there, and nothing conclusive, nobody's better off and a lot of time and energy was spent learning nothing.
What good can possibly come from this?