I think that there is not enough wealth around to support all elders communities at reasonable levels. The demography is a bitch all around and there is too many people young and old that believe that they deserve american middle class level of life. Where they will find all required modern slaves to make it happen?
We have plenty of wealth. The argument we don’t is something I don’t actually believe and would like to request evidence for. Everyone does in fact deserve a decent quality of life, with basic things like healthcare and housing made available to them and we don’t need slavery to do this.
If everybody would somehow limit their greed - then yes, You are right, there is plenty of wealth - for example from the pure math point of view the hunger problem should not exist (we have too much food at this moment).
But this is not math problem to solve - this is people problem.
We collectively do not care enough to solve it. Most of us are lazy and there is too many greedy people between those who can provide and those in need.
When I look around my family and friends I do not see anyone who knows how to limit their greed - I believe that almost all of them, if given a chance, would use money and power to bring their status up, increase their consumption, and only then would share like 10% of it with the ones in real need. And when I look around those who know how to restrict themselves (some church community participants) I only see people that know how to talk and are mostly impotent - they do not know how to build systems that could bring wealth to those who need it.