Through artificial intelligence and their boundless  capacity for innovation, they have inserted themselves into a failing health care sector, which they see as just the ultimate market to conquer.
Google sorts patients in British emergency rooms. Apple takes the world's pulse, and has promised to make improving public health "its greatest contribution to mankind." Facebook has its own Zuckerberg Hospital and shares its users' "secret medical information" with the pharmaceutical industry. As for Amazon, Jeff Bezos's company has started delivering medicine, and is entering the medical-insurance market.
Is our health the next sector facing Uberization? Will nations be able to protect their citizens from the maneuvers of the Big Four?