I'm explaining myself poorly. Might have to do with my lack of coffee today.
Looking back on a person's life you can show what they've achieved. All their choices have been made regarding how hard they want to work, what they know, and various other things. It's easy to quantify. When I'm saying anyone has the potential to be wealthy, I mean that there are still choices to be made and the person's future is uncertain.
Ok. I agree with the uncertain future for all, and therefor not all can reach the same level. That's the way I see it.