Amazon and Walmart's Health Care Battles

What will you be watching most closely between these two companies as this plays out over the next two three four years or longer? I think what they set out to accomplish and what their motivations are in across health care really might have the most profound long-term impact on us all. The concept of the everything store is super appealing to both companies and to a lot of consumers but just feels like there's a lot of openings for major problems to rear their heads if they just keep expanding those marketplaces.