Original preference - "I just want to be able to eat."

Environmental change: "Here, there's enough food to go around forever."

Adjusted preference - "Okay, then what I REALLY want is for me to eat while those guys have to watch, starving."

You mean "What I REALLY want is to eat better than everybody else", surely. Gourmet food or organic or hand-prepared etc. etc.

Unless this is intended to imply the current famines etc. are the product of a conspiracy and not civilizational inadequacy, in which case yes, that would of course be evidence that my model of human nature is wrong an yours is the correct one, if it's true.