If they are public employees, they have sort of a standardized salary coming straight from the healthcare ministry/department/whatever where the specific hospital just administer the HR part. You still think in a for profit manner, where healthcare in most countries is not a for-profit endeavour. As long as it works, it's fine, even if it's a net negative. You try to limit the money you waste and inefficiencies, but not by pulling levers on the staff salaries.
>You still think in a for profit manner, where healthcare in most countries is not a for-profit endeavour.
And in the US it's not.
Assuming that you can simply remake a massive chunk of the economy (hospitals, doctors, nurses, clinics, etc, etc) to be government owned is silly. People will protest, lobbyists will be paid and it won't happen. If your only solution to the problems people point out is essentially magic then, no, it's not a valid solution.
This is not possible without socializing the entire economy. At some point, you have to pay doctors, nurses, staff, equipment manufacturers, etc.