If you are born middle class or with an intact family structure or immigrate, opportunity is unlimited. If you're born here poor/without a family structure, or were born in the wrong place, you're stuck in a feudal-like system.
Anecdata: It can be escaped. I grew up in a divorced household. Poor. In the middle of nowhere. I even had a kid early, at 15. I'm now firmly in the middle class. I feel that if I were less risk adverse, I could find myself moving even higher up.
If you are born middle class or with an intact family structure or immigrate, opportunity is unlimited. If you're born here poor/without a family structure, or were born in the wrong place, you're stuck in a feudal-like system.