The American post-war generations gave a collective belly laugh last week when 84-year-old Sen. Orrin Hatch, R-Utah, asked Mark Zuckerberg with stark earnestness: “If [a version of Facebook will always be free], how do you sustain a business model in which users don’t pay for your service?” Mark Zuckerberg, with his voldemort-esque visage, responded: “Senator,...