Even if we assume you(r side of the debate) are correct and socioeconomic outcomes are merely reflecting inherent inequality between people, surely it is unjust to punish people for innate characteristics they cannot control?
I don't think socioeconomic outcomes are merely reflecting inherent inequality between people, I never said anything like that. Intrinsic ability doesn't matter much at all to this broader discussion of socioeconomic status, because morally there isn't much different between your intrinsic ability and your work ethic. Most important aspects of your environment and upbringing are outside just about any construction of control as well. So yeah, if I were you I wouldn't get too hung up on holding to some fictitious idea that we all start as a "blank slate", none of your politic opinions actually require that.
If you started at age 6, and devoted the same level of intensity and focus into sprinting as Bolt, yeah, you'd probably be somewhere in the vicinity.
Vicinity, as in maybe I could be within... 2 seconds? Possibly, it's almost impossible to say. I wouldn't be at the Olympics, that much is clear. Seeing the discrepancy between young kids before they have had any training can reveal a lot about intrinsic ability. Of course, their environment has already has been a factor, I'm not denying that. But it works in all directions, sometimes hindering those with crazy talent and boosting those without it. A lot of sports give advantages to basic strength and height differences. Both of those can be environmentally impacted but repeatedly minimizing the genetic component of them is... nothing short of silly.