(Which is to say, the private sector very much does have an efficiency advantage when there is a competitive market. Because only then is everyone in that marke

(Which is to say, the private sector very much does have an efficiency advantage when there is a competitive market. Because only then is everyone in that market personally motivated, by the "vice" of greed, to be virtuously efficient. The only exception is what some people call a "monopoly par excellence"; a firm without competitors which nevertheless acts as though it has them.)