The typical “poor” person living in the USA lives in the lap of luxury (in terms of clothing, food, shelter, etc) compared to a serf in medieval Europe, a peasant under the Assyrians, etc. I mean, how many poor people have running water, electricity, Air Conditioning, etc.? Can you imagine a poor person from 3,000 years ago seeing that and then hearing talk about wealth inequality? It would sound insane.
Cesar Augustus was worth $4.6 Trillion. That’s a pretty huge wealth disparity to a common person back then. What about Mansa Musa? His wealth was so vast that nobody even knows how to put a number to it. Do you think the common people under him were rich?