Amazon, JPMorgan Chase and Berkshire Hathaway recently announced they're joining forces to tackle America's expensive health care system. Health care is probably the most reliably growing piece of U.S. GDP -- and until recently, a strong driver of inflation -- but that could change as Amazon moves into that space. Scott Lanman of Bloomberg News speaks with Bloomberg reporter Spencer Soper and economist Laura Rosner of MacroPolicy Perspectives about Amazon's history of disrupting industries, and whether or not our current health care system could go the way of bookstores.