> Even Bill Gates, as smart as he is, benefited from lots of luck.
Luck ... read as rich parents.
Bill Gates had parents who had connections with extremely important people in multi-national companies.
Bill Gates had access to a computer as a child (via his expensive private academy) back when computers were ferociously expensive.
Bill Gates had parents who could cut a check for $50,000 (in the 1970s) on the whim of their child.
Bill Gates had the ability to drop out of Harvard knowing that he could always go back or to somewhere else because his parents could pay for it.
The child of a steelworker, for example, has no ability to take any of these chances because if they fail there is no recovery. If you get into Harvard, you will go the full four years. Even if your business idea is great, your parents will not cut a $50K check as that would pay for your college (and a house and a car and college for your siblings and still have about $25K left over) at the time. Even including the adults around you, none of the people around you have access to those expensive "computers". And your parents certainly don't have access to the senior executives of US Steel, for example.
The "leeway to fail" is a big deal in allowing you to roll the dice to make "luck".