In his upcoming book, Unbeatable, Bryan Caplan makes the brutally honest case for free markets:
Real-world free markets deliver one broad benefit that flies under the radar of economic theory: They shield humanity from its own Social Desirability Bias. Markets do the good things that sounds bad. Good things like driving incompetent, unresponsive, and obsolete businesses into bankruptcy. Producing “shameful” products people secretly love. Refusing to produce “admirable” products they secretly loathe.
Keeping costly products out of the hands of people who barely appreciate them. Putting convenience above safety. Firing superfluous workers so they search for constructive ways to spend their lives. Charging people to drive. Charging extra during rush hour. Inducing teens to abandon their childish dreams. Persuading grown-ups to volunteer for the uninspiring dirty jobs that someone has to do.