Bezos has developed a corporate behemoth that distributes goods at good prices, at absurd convenience, and as an encore provides web infrastructure for countless other businesses. I don't really have any stats, but it seems plausible the logistic chains he oversees saved a fair number of lives in the current pandemic because it reduces the need for people to contact each other.

Given that record, I think there is a better argument for putting him in charge of the US healthcare system than putting the people in overseeing the healthcare system in charge of Amazon. Bezoscare written by Bezos would likely be much more effective than Obamacare written by the US Congress.

And I still don't see the argument that the US government is somehow more accountable than he is.