The bigger they come, the harder they fall. Such corporate Goliaths as IBM and General Motors once dominated American industry. Now they hemorrhage billions of dollars in a single year. What happened? Like the dinosaurs that once roamed the earth, they failed to keep up with the times. "Nothing is forever," says Louis Lataif, dean of the Boston University School of Management. "None of us today could name the 50 largest companies in America in 1900, but everyone alive at the time thought they would all go on forever."
Yet the turmoil that grips GM, IBM and other behemoths including Sears...