you base your argument on the thought that in the past society operated on the basis of exchanges, as it does today, and that the nobles needed to have resources to exchange with the poor.

Did you forget about the existence of slaves? 1/3 of the population of the Roman Empire was already occupied only by slaves, you don't need to have resources to give for someone's work if you can force him to work for free

Glad you asked. Well I wrote a post on the subject if you're interested : https://www.reddit.com/r/singularity/comments/uiy5rv/most_of_our_problems_are_cultural_not_technical/