From experience, there is a huge shortage of human talent.
Some people really are exceptional and there are very few of them.
How many Einsteins do you think are just kicking around? How many Robin Williams's or Tom Hanks's?
How many Kobes? We know not many because there's a huge search to find more.
There aren't 20 more Elons waiting in the wings there. Or 20 more Jensens. And so on.
It's actually far more rational as a society to pay the one guy who can create 100B his 10B for it.
There's thousands of Einsteins kicking around. The majority of them are in places like India and Africa, not having access to resources that would allow them to realize that potential.
And the last thing we need is 20 more Elons.