UnitedHealth's model is a conflict of interest, since it owns both the insurer and the doctors and data, which makes it too dark to own. It has been accused of using algorithms to systematically deny care to the elderly and sick to lift profits; as both the largest US employer of doctors and an insurer, the patient loses. The assassination of its CEO showed deep hostility toward that system. A moat built on denying care is not worth owning. x.comÂ