I really think he is not interested in just the money. I think you need to give him the challenge to do something cool that he's interested in, access to teams

I really think he is not interested in just the money. I think you need to give him the challenge to do something cool that he's interested in, access to teams of smart people to collaborate with, resources to be able to make an impact with the technical solutions he finds and give him the leeway to do his thing. There are not a whole lot of places that have the mass and spirit for this. Although, Carmack being him could spin something out of thin air, I'm sure. He never struck me one terribly concerned with ethical dilemmas. More the pragmatic kind that wants to work on cool stuff. But I always listen when Carmack talks because no matter his ethics, I find he has exceptional insight.