You have raised some very valid concerns buddy. Obviously, those that can afford enhancements will want to impose superiority over those that cannot. Weirdly, these people that can afford it is also meant to be ones legislating and putting standards for the usage of enhancements. Like you rightly pointed out, they will not want to take away that advantage from themselves.
Believe me, this is just very minor compared to what is coming. Imagine a world were humans will literally be mechanical.

Thanks a lot for coming around buddy