Vanishing American Corporation

It may be hard to believe in an era of Walmart, Citizens United, and the Koch brothers, but corporations are on the decline. The number of American companies listed on the stock market dropped by half between 1996 and 2012. In recent years we've seen some of the most storied corporations go bankrupt (General Motors, Chrysler, Eastman Kodak) or disappear entirely (Bethlehem Steel, Lehman Brothers, ...