I don't really see how this affects e.g. what I do for my children. I will absolutely be turning them into the closest to superhuman the current state of treatments lets me, traveling internationally if I need to. If someone else decides to segregate access to treatment, that is a separate, wrong act that will not hold me back from giving my children every advantage possible.
(Yes, I understand this is a positional arms race, but 1. that doesn't change the individually-optimal outcome, and 2. that doesn't change that society net benefits from it.)