adam704

Much of the "invisible hand" idea about how free markets run, and more specifically how they run efficiently, relies on the axiom that people in the market will act rationally towards their own self-interest. As with the Tragedy of the Commons, a capitalist model (generally at least) assumes that people will act towards their own self-interest even when those actions work to the detriment of the group. People that fit that description are certainly selfish (if rightfully so) and in that sense may qualify as "shitbags."

Here is an accessible explanation of what the monster group is in more detail: http://youtu.be/jsSeoGpiWsw.