“Oligopoly, where there are a few sellers, is more complicated than monopoly, but also involves substantial market power. And here’s the thing: it’s obvious to the naked eye that our economy consists much more of monopolies and oligopolists than it does of the atomistic, price-taking competitors economists often envision.”

Krugman, Paul, ‘Challenging the Oligarchy,’ a review of Robert B. Reich’s, Saving Capitalism: For the Many, Not the Few, (Knopf, 2016), in The New York Review, December 17, 2015, pp: 16-20.