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】
Sustained existence of companies is not necessarily an indicator of a well-functioning economy.
选项是否正确？