In the scenario where they chose the $40B in OpenAI equity, they are eschewing $97B with which they can achieve their mission. They will be less effective by $57B. They still have no control over OpenAI in this context. They don't have control over OpenAI from the perspective of safety/benefit of humanity. All they have is $40B worth of equity.
Or, they can get $97B and go about completing their mission. In this case, what happens to OpenAI doesn't really matter. They lose control over OpenAI from the perspective of safety/public benefit in both cases, but in this case they get to deploy $97B of capital to their goals. The success of OpenAI-P is irrelevant to OpenAI-NP.
Now, maybe you would claim that there is some kind of existential risk from OpenAI-P being controlled by Elon. But if that's the case, how is Elon uniquely special? How does OpenAI prevent Elon from gaining control of OpenAI anyway when they won't have control to prevent it? How can they be sure Sam Altman is okay to lead when the board already removed him due his duplicity once. To eliminate their control OpenAI-P, they open themselves up to this same risk regardless. They can take that risk with either $40B of equity or $97B of cash.
> "I'll pay you double" isn't the instant checkmate you're suggesting.
This isn't what I suggest at all and I would've expected someone who sees through such complex issues to rationales that are "obvious to everyone" would've been able to see that. This does however pose real problems for OpenAI-P as they try to go private!