As John Cassidy underscored in a definitive article titled Who Needs Wall Street? in The New Yorker last week, the financial sector has paid little for bringing the world to near-collapse or for receiving the taxpayers bailout that was denied to most small-enough-to-fail Americans. The sector still rakes in more than a fourth of American business profits, up from a seventh 25 years ago. And what is its contribution to America in exchange for this quarter-century of ever-more over-the-top rewards? During a period in which American companies have created iPhones, Home Depot and Lipitor, Cassidy writes, the industry reaping the highest profits and compensation is one that doesn t design, build or sell a tangible thing.