Not many professional athletes are even sitting on hundreds of millions, after you take stuff like taxes, agent fees, accountants, lawyers, etc., on top of just spending. Not those guys we are talking about are still plenty well off enough to not have to go to Saudi for a payday, but no one is turning down a payday like that.
I'm sure there are plenty of comps that can be made to people here to test that. Say someone on this board is a lawyer, and they refuse to take certain types of clients, but they offer you a certain level money to do so, at a certain point, the vast majority of people will take on that client. It's not even that you are being greedy or selfish or a sellout, but either you can set your family and generations up for a good life where money isn't a concern or you can then use that money in better ways, plenty of justifications.