Opinion: Retail could do to healthcare what Uber has done to taxis

Uber, the poster child of the sharing economy, came out of nowhere and managed to overhaul the traditional taxi business in just a few short years. It now has a valuation of approximately $41 billion. Now Wall Street is searching for the next industry that can be Uber-fied. There are rooms full of analysts in search of the next "sharing economy" juggernaut. And I'll bet they're not looking at health care — an industry that's proven one of the most difficult to drag into the tech age. But they could be missing something big. Recent movement from the U.S.'s biggest retailers into the primary care business indicates that health care might finally be in for some big disruption.