@sil3n7: I feel this statement comes from complete and utter naivete.
Largely, your worth is calculated by how well connected you are. You can draw a direct line between how wealthy your family is and where you'll generally land on the economic scale.
The further down the scale you slide, the harder your progeny have to scramble to ascend the ladder.
For instance, you make a statement about getting more education so one might develop a more valuable skill, however this is very dependent on your available resources. IE: You can't squeeze water from a rock.
Also, a lot of what you make is all about luck. Knowing the right people, being in the right place at the right time, etc.
You'd be surprised how often the people in well paid positions don't have education in what they're doing. How do you think they got those positions without the education? If you guessed their connections, you'd be right!