I don't expect a case against OpenAI to be given the leeway to bring into question the entire notion of a nonprofit. There are long standing laws (and case law) for nonprofit entities, it won't all get thrown out here.
>>catoc+ZO
Not that I'm aware of, though its definitely not my area.
I can't think of another example of a nonprofit that was so financially viable that it converted to for-profit though, usually a nonprofit just closes down.