Both those jobs require PHDs, something only 2% of Americans ever get. It would be inaccurate to claim that there’s only a 1% chance of both your parents being doctors, but it is more exclusive than 1 doctor. They were definitely millionaires by the time he was an adult, and could probably afford excellent education for him since birth. The key thing is that closer you start to the bottom, the harder it is to become ultra wealthy.