I don't know any, but my guess is that multimillionaires and billionaires asses risk much like most normal people. This isn't like a business venture or medical treatment where you can put a team together to assess the risk for you. It's more like skiing or scuba diving where there is some inherent risk and you decide to do it or not.

IMO I think its less because less affects them. Much more similar to the lowest socioeconomic rung.

There is no worry about not being able to go to work if you get injured.

There is no worry about getting fired for "not representing the corporate values" because you did something sexy.

Same for substance use or abuse.

Only the people in the middle have to care about all that stuff.

Based on their results from helicopters, I’d say they have a higher risk tolerance than many would be comfortable with. Helos seem to me to border on being a natural predator of billionaires.