What if 80% of kids that come from a family with a net-worth of $10M go on to be "successful", but only 20% of kids that come from a family with a net-worth of

What if 80% of kids that come from a family with a net-worth of $10M go on to be "successful", but only 20% of kids that come from a family with a net-worth of $10K do? You've got a huge disparity. And maybe you can "pull yourself up by your bootstraps". But what about the other 80%? Who are putting in an equal effort to their better funded counterparts and not getting an equal reward?