My personal experience is very different. I was born in a modest family in eastern Europe and now I work in an investment bank in London.
To give an example, one of Goldman Sachs former CEO's started as a janitor in the company: https://en.wikipedia.org/wiki/Sidney_Weinberg#Career_at_Gold...
He was a high school drop-out.
It will sound harsh, but the truth is that most people are average. If you are brilliant and with a bit of luck you will make it to the top in most western countries.