If an OpenAI model helped someone create a cancer cure I guarantee that they would try to profit as much as possible from that fact. They have even talked in the past about having partial ownership over discoveries made with AI be part of the license. They would be all over that.
I'm sure if they could, they would, sure, as would any business. That's where competition enters the equation. They can't do it because their competitors would undercut them by requiring no such conditions.