KEY POINTS
  • Amazon, Berkshire Hathaway and JP Morgan Chase announced Tuesday that they're banding together to create a company that wants to reduce health-care costs and improve services for U.S. employees.
  • Health spending represents 18 percent of U.S. gross domestic product and is expected to reach 20 percent by 2025.
  • Experts question whether Amazon, Berkshire Hathaway and JP Morgan Chase can lower costs and improve outcomes.

Three of the country's most powerful companies coming together to use technology to improve the health-care system — and lower the system's costs along the way — sounds like a great idea.

But turning that idea into reality will be tough, experts said Tuesday.