This is plainly delusional. There already is abundance, global crop lands produce enough calories to feed twice the world’s population[0]. Greed is the reason for inequality and “AI” is not solving that. It is pure wishful utopian thinking to believe that there will be some massive AI-initiated abundance.
[0] https://www.oneearth.org/half-the-worlds-food-never-feeds-pe...
It would seem to me that the main source of food insecurity is violent conflict rather than greed.
Speaking specifically about food insecurity and homelessness in the US, it's not simply greed, it's "just deserts" ideology. It's a belief in the lack of merit of the poor to receive help.
Speaking globally, there are many more barriers to feeding everybody than just abundance, like the other guy said.