If the "standard" for poor is changing over time, then the goal of eradicating poverty can never be achieved. For me, it has to be static: Basic shelter, food, health, and safety. It's a set of criteria that I believe most reasonable and non-idealistic people can agree on to be a universal starting point.

The fact that we're not providing the above basics universally to all citizens right now, as a matter of priority above all else, is a damning critique of government and one of the main reasons that set me down the path of anarcho-capitalist thought.