Doctors are generally terrible at business and treasury functions, so I can understand they could not make it go.
The triumvirate of Chase/Berskshire/Amazon forming a new entity to handle health care for their 1 million plus employees could undoubtedly make sense, and work out. It would not be much different than business pooling together through their associations to form a quasi-insurance market. My guess is this will be some type of self-funded situation with stop-loss amounts being reinsured. But with the elimination of several layers of add-ons and mark ups, plus having pricing power of a sizeable group, I am sure they can ultimately reduce costs.
If we can rid the nation, completely, of the disastrous obamaKare legislation and regulations, we can easily begin to lower costs in any number of ways, with this latest maneuver by the Chase/BH/Amazon being just a starting point in providing one template.