It depends how you define "exploit". How is Jensen Huang "exploiting" others? He started a GPU company, hires a lot of people, pays some of them very well, pays others not that well. I don't think you can say he is "exploiting" them though. He made lives of hundreds of thousands of people much better. If anything I think he should be celebrated and I am very happy he is a billionaire.

How is Roger Federer exploiting others? He played a competitive game, won a lot of tournaments, accepted a lot of sponsorship money. He is now a billionaire. Did he need to give up ethics and morals to get there? What kind of blame is that really?