that's true, but given the heritability of intelligence from generation to generation, I'd argue that the genetics of a brother and a sister or two brothers or two sisters is going to be much more similar than that of a white person and a completely unrelated black person, so assuming all success is genetic determinism doesn't seem to bear out. Even among people who are based on the same two parents you have huge differences.

The other thing is that I do believe that choice strongly factors into success, going back to the part I said where intelligence isn't the only factor in success. I look at my own reasonably successful life, and 2-3 choices would have a substantial impact on my level of success. Knock up a girl at 13, it all goes away. Give up on school and become a WoW addict, it all goes away. Get deep into cocaine, it all goes away. Those are choices we each need to make and while genetics may help, I don't think it's fully deterministic.