The greedy have a problem with the free market. When people are free to say no to spending their money the greedy are forced to give equal value for equal value. Trading is done without force.
Interventionism, which is a step towards socialism but does not place complete control of services or assets in the hands of the Government, Is by its nature more attractive to greed.
Take for example Cap N Trade; here we have a system which requires trade in carbon credits for an energy company to continue to provide a service. Nothing could be more alluring to people who idolize wealth; and people are lining up to exploit the need requirement that some will be forced in to trade.
Look at the national teachers union; Another example of trade by force; teachers are required to be members and fund the lobbying efforts of whatever the union wants to spend their membership funds on.
Examples of trade in the bible are done without force. “Listen to me, my lord; the land is worth four hundred shekels of silver, but what is that between me and you? Bury your dead – Genesis 23:15”