Capitalism earns its keep through Adam Smith’s famous paradox of the invisible hand: self-interest, operating through markets, leads to the common good. Yet the paradox of self-interest breaks down when stretched too far. This is our global predicament today.
Self-interest promotes competition, the division of labor, and innovation, but fails to support the common good in four ways.
First, it fails when market competition breaks down, whether because of natural monopolies (in infrastructure), externalities (often related to the environment), public goods (such as basic scientific knowledge), or asymmetric information (in financial fraud, for example).
Second, it can easily turn into unacceptable inequality. The reasons are legion: luck; aptitude; inheritance; winner-takes-all-markets; fraud; and perhaps most insidiously, the conversion of wealth into power, in order to gain even greater wealth.
Third, self-interest leaves future generations at the mercy of today’s generation. Environmental unsustainability is a gross inequality of wellbeing across generations rather than across social classes.
Fourth, self-interest leaves our fragile mental apparatus, evolved for the African savannah, at the mercy of Madison Avenue. To put it more bluntly, our sense of self-interest, unless part of a large value system, is easily transmuted into a hopelessly addictive form of consumerism.
For these reasons, successful capitalism has never rested on a moral base of self-interest, but rather on the practice of self-interest embedded in a larger set of values. Max Weber explained that Europe’s original modern capitalists, the Calvinists, pursued profits in the search for proof of salvation. They saved ascetically to accumulate wealth to prove God’s grace, not to sate their consumer appetites.
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