Not a representative sample, but everyone I know who is earning 6 figures, has a very challenging start in life, and fought tooth and nail to get out of poverty, they wanted better for their children than they had. And that fight enabled them to fight their way up the career ladder to the top.
And all my friends who had reasonably comfortable starts (not rich, but engaged parents, always fed,clothed etc) has ended up in a vocational role - healthcare, teaching, SW. They all understand their privilege and wanted to support others over 'making big bucks'.