Greed is good for the US economy. The reason being is that more companies have been able to gain money through greed.
It encourages innovation and allows anyone that is willing to work hard and invest in themselves through education can succeed. It is the only system where people can rise from poverty to become wealthy. In socialist societies the become two classes. There's minimal opportunity to work from one class to another.
Here in us for example when you look at the fortune 500 many of the companies are less than 30 years old. We have Microsoft, Apple, and the Enterprises, etc. That were able to come from nowhere and grow quickly. With these new companies comes new jobs, opportunity, and economic growth in addition to efficiencies across the board making all of our companies more competitive. If there were no greed, this would not be possible.
When you look into the past, we were able to do a lot with greed. We made it to the moon. We have the most technoligible phones around including the iPhone X. Steve Jobs made this company that made the iPhones by using greed to get this money. When you look into the future, Amazon is becoming even more significant than Wal*mart, because it is more convenient to humans and also Amazon is using greed to get more money than Wal*mart. Mars One is also planning a trip to Mars in the future using greed. This is all done by using greed.
Added (1). Greed has done a lot for this country. It gives us money and also allows life to be easier especially for the rich. If greed didn't exist, the US economy wouldn't be as strong. This is because there would be certain companies with a ridiculous amount of money and companies that have almost none. There would be more stores like Toys'R'Us without greed. Companies have a lot of money, because of greed.
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