It's also possible that the structure of the non-profit/for-profit/operating agreement/etc. just isn't strong enough to achieve the intent and the investors have the strangehold in reality.
If I was invested in the mission statement of OpenAI I don't think I would view the reinstatement of Altman as a good thing, though. Thankfully my interest in all of this is purely entertainment.
Optics and the like don’t really matter as much if you’re not a for profit company trying to chase down investors and customers. So long as OpenAi continues to be able to do research, it’s enough to fulfill their charter.