Of course a lot of those players have in turn gone on to gambling and hedge funds.
Which implies the most innately talented potential musicians and actors are working at a hedge fund or Google DeepMind. And perhaps the odd personalities of musicians and actors is more to do with the bottlenecked selection than some relationship between talent and impulsivity: Only the egotistical and impulsive would step into such fray.
And so we are left not with the best but with the best of a bad lot!
Note that this is the same rational for starting a startup. Would you argue that all successful startup founders are the best of a bad lot?
Economics would predict the 10 guys really really good at singing would tour, as they make many millions of dollars.. and the guys that are only OK at singing (but also good at math), go on to be accountants and sit in a desk somewhere. Global demand for accountants is much higher than singers.