This is reductionist and offensive.

(1) On a practical level, although I don't know Greg's personal financial situation, he was the CTO of Stripe for five years. He's rich enough not to work. He works exactly because he's enthusiastic.

(2) Secondly, to say that Greg merely handles logistics for OpenAI is to willfully ignore the post as written, and the reality on the ground.

Also, I'm not sure Sam is a billionaire, although well on his way.