Even for Bezos, Fixing Health Care Is Hard

Every year, health care consumes a larger share of the U.S. economy. Decades of grand efforts to control costs mostly haven’t worked: Health care now accounts for about 18 percent of gross domestic product. Warren Buffett has compared the system to a hungry tapeworm eating away at its corporate and taxpayer hosts. Now he’s trying to do something about it by forming a health-care alliance with Jeff Bezos’s Amazon.com Inc. and Jamie Dimon’s JPMorgan Chase & Co. Can the Buffett-Bezos-Dimon effort succeed where others failed?