One of the favorite nouns in the lexicon of critics of the free market economy is the noun “exploitation.” Its cognates–the verb “to exploit” and the adjective “exploitative”–are no less popular. Those controlling capital “exploit” men and women with only their labor to sell. Business people “exploit” consumers. Capitalist nations “exploit” lesser developed nations. On and on the sordid story goes. Half-hearted defenders of a free market economy frequently agree, at least in part, with such criticisms. Yes, an...