It might not seem like the case right now, but I think the real disruption is just about to begin. OpenAI does not have in its DNA to win, they're too short-sighted and reactive. Big techs will have incredible distribution power but a real disruptor must be brewing somewhere unnoticed, for now.
That they reached a different conclusion than the outcome you wished for does not indicate a lack of critical thinking skills. They have a different set of information than you do, and reached a different conclusion.
Do you feel the same way about Reed Hastings serving on Facebooks BoD, or Eric Schmidt on Apples? How about Larry Ellison at Tesla?
These are just the lowest of hanging fruit, i.e literal chief executives and founders. If we extend the criteria for ethical compromise to include every board members investment portfolio I imagine quite a few more “obvious” conflicts will emerge.