“There are four ways in which you can spend money. You can spend your own money on yourself. When you do that, why then you really watch out what you’re doing, and you try to get the most for your money. Then you can spend your own money on somebody else. For example, I buy a birthday present for someone. Well, then I’m not so careful about the content of the present, but I’m very careful about the cost. Then, I can…
The problem with these economicist "stories," as they call them, is that people (including economists themselves) believe them too much.
Once stories like this are embedded in the way we think, we constantly see ways of interpreting the world in a reinforcing way. Every case of inefficiency is found to be an example of principal-agent problems.
Not specifically a Friedman problem or a laissez-faire problem.