A central idea of Utopia is that by making it seem as though gold and silver are less valuable, people will become less greedy. This does not ensure that the human emotion greed will be eradicated. Other things will replace gold and silver as the most desirable, other people will still covet what their neighbor may have even if the portions are even. They would simply want more than the average person. Therefore greed cannot be eradicated no matter how much we wish we could. It is something that we cannot get rid of. A basic human emotion. Getting rid of greed would be like getting rid of happiness or sadness. No matter what idea you have to alter the human emotion, it may work for some but not for all.
The idea of a Utopia has long been tossed around. The ancient Greeks, Romans, and the Stoics themselves long pondered at the idea of a perfect city-state. However, as we have seen with countless examples of attempts at achieving such a state. from the communist state of the Soviet Union to the more contemporary examples of the dictatorship of North Korea and communist China, when this idea is implemented, there is always going to be a large separation between the richest and poorest of the populous.