I think logically if you accept the premise that some can be improved, then you have to answer the question of why not others. It's a moral opportunity cost, an

I think logically if you accept the premise that some can be improved, then you have to answer the question of why not others. It's a moral opportunity cost, and equivalent to withholding food or water. The costs compound to society at large though if withholding improvement affects others. It's a moral question that has nothing to do with economic systems.