Externalities like pollution are one of the classic forms of market failure, and Econ 101 says that this failure should be remedied through pollution taxes or tradable emissions permits that get the price right...
The Gospel According to Milton Friedman
Today’s American right doesn’t believe in externalities, or correcting market failures; it believes that there are no market failures, that capitalism unregulated is always right. Faced with evidence that market prices are in fact wrong, they simply attack the science.
What this tells us is that we are not actually having a debate about economics. Our free-market advocates aren’t actually operating from a model of how the economy works; they’re operating from some combination of knee-jerk defense of the haves against the rest and mystical faith that self-interest always leads to the common good.