The idea that there is a competitive “private sector” in America is appealing, but generally false. No one hates competition more than the managers of corporations. Competition does not enhance shareholder value, and smart managers know they must forsake whatever personal beliefs they may hold about the redemptive power of creative destruction for the more immediate balm of government intervention. This wisdom is expressed most precisely in an underutilized phrase from economics: regulatory capture.

When Congress created the first U.S. regulatory agency, the Interstate Commerce Commission, in 1887, the railroad barons it was meant to subdue quickly recognized an…