This might come as a shock to you, but I don't think you understand capitalism and self-reliance. Greed is a good thing. Greed is independence. Wealth is created, not distributed.
Greed has gotten millions of people into trouble with their credit card debt...again...how did their greed benefit their self interest. It didn't and the greed of the CC company didn't create wealth either. They both lose, again.
Greed has not, has not, created wealth. It has created corruption of the capitalist system. Essentially everyone around has no wealth, they may have stuff and pieces of paper claiming wealth...but they have no wealth.
In a few short weeks we may very well see the depths of our debt system of greed. The dollar in your pocket will not buy the loaf of bread to feed your family, it represents the debt and greed of the nation.
Greed works against the capitalist system. Self-interest works within the system to preserve, protect, and create prosperity that leads to wealth. One must ask why a greedy person would do something against their own self-interest? Like purchases they don't need, can't afford, etc. And why a business would support such actions, which work against their own profits? If you can't see the difference, then perhaps it is you who doesn't understand the capitalist system.
Kinda sorta think this might be appropriate to our discussion: http://usabig.com/autonomist/moneyspeech.html