Here's what this is about. Large successful companies contract out their health insurance and care to external companies. Most of those companies are profit centers- they provide a service, but they take a very large profit on it. Much of that profit is just waste- it's money that goes to people who aren't innovating, or providing value, just acting as gatekeepers (note: this is just my opinion, not provable fact).

Companies like Amazon know they can provide that same service- or a simplified version of it that focuses on effective treatments that don't cost a lot of money- far more cheaply, because they have willingly forgone short-term profits.

Whether this saves money and provides adequate care remains to be seen.