Greed as we see it today is a symptom of our economics system. The system encourages greedy behavior, you win if you act greedy. I'm currently working on simulations attacking this problem, focusing on systems that discourage competitive actions and encourage cooperation and equality. A resulting society based on a more egalitarian economic system wouldn't be a utopia, but I hypothesize that we can create a much better world by attacking the root of all out systems and what types of behaviors it rewards.