In both cases the costs are imposed on a non-consenting minority - in the first case the minority is chosen by math.random(), in the second case the minority is

In both cases the costs are imposed on a non-consenting minority - in the first case the minority is chosen by math.random(), in the second case the minority is chosen by genetics. It sounds like you want to appeal to some principle that certain minority groups (those with "meaningful" group identities) deserve special moral consideration? Supposing that nerds or just some protectionist lottery victims created a "meaningful group identity", would that make them deserving of protection? You are right that for an individualist (which I am), this is a lot harder. So I simply wouldn't share your moral conclusions, but I'd at least understand where you come from.