But then you're back to the original question: is eradicating all poverty even possible? A tech like AC is not available to everyone all at once. It starts out

But then you're back to the original question: is eradicating all poverty even possible? A tech like AC is not available to everyone all at once. It starts out very expensive and gets cheaper over time. It may end up cheap enough that it can be ubiquitous, but before that point there must be a time that only most people can afford it. If you then include it in the must-have category before the point of ubiquitousness, you will never get rid of poverty. Whereas if you include it after the point it's a pointless exercise, because everyone that wants one already has it.