This brings up a question of how you value people who don't exist yet. Technically (not saying anything about politically) the problem you describe can be solve

This brings up a question of how you value people who don't exist yet. Technically (not saying anything about politically) the problem you describe can be solved by population control -- "just" don't make more people than can be comfortably supported. We already do that with birth control or by simply not having sex. But that means people who would have been otherwise born would not be. If that is not an issue, perfect, you have your technical solution. If that _is_ an issue, then you have more problems than immortals hoarding resources (one of them is Repugnant Conclusion [0]). Another way to look at it -- would you want current lifespan artificially shortened if you knew for sure that it would make things fairer for new generations? [0] - https://en.wikipedia.org/wiki/Mere_addition_paradox https://en.wikipedia.org/wiki/Mere_addition_paradox