https://theconversation.com/why-amazon-and-friends-plan-could-be-a-major-disrupter-of-health-care-system-90987

Besides being large employers themselves, Warren Buffett knows insurance through his Gen Re reinsurance company. Amazon has taught everyone how to shop far better online than in stores, and JPMorgan has had extensive experience with Health Savings Accounts, which are tax-sheltered savings accounts paired with high-deductible insurance polices that eligible people can use to pay for health care costs. They know the elements of the past playbook individually.