You are right, I don't have rich friends who create wealth. But if I to choose one as a friend or mentor to make the world a better place, I'll side with the person not trying to game an entire society to get richer, regardless of the other's stated intention to "create wealth for everyone".
That said, I don't doubt that they do create wealth, I just think any benefits to society are incidental, and that the logical rigor of their ex post facto justification is lacking.
Why do you insist they must be rich? I had in mind for example engineers who create wealth by solving problems and don't desire to climb corporate ladder.
That said, I don't doubt that they do create wealth, I just think any benefits to society are incidental, and that the logical rigor of their ex post facto justification is lacking.