And then I guess there's the third option which is money. These folks already have "enough" funds for generations to come, but there's a lot of financial fomo out there when you see all your peers becoming billionaires and you're a lowly centimillionaire.
So in addition to large-team leadership skills, there may be some niche technology/systems that only a limited number people have experience with multiple 1-3 year cycles of designing, building, maintaining, and replacing these uniquely large infra systems.