A common criticism of capitalist economies is that they encourage greed, but participants in capitalist systems must often act in their own self-interest. If they did otherwise—say they sold their product at a loss—then sustaining their companies, and the economy in general, would be difficult, if not impossible. Obviously, the greed people ascribe to capitalist economies is indicative of well-functioning economic systems.
Which of the following, if true, most seriously undermines this reasoning?
【选项】
Some of the actions taken within capitalist economies could have been taken for reasons other than self-interest.
选项是否正确？