Earlier quoted context omitted.
You’ve got the answer right there. It should be nationalized. And a major reason it will never be nationalized is because of lobbying by health insurance corporations.
Well that and people finding the idea repellant and voting against it.
M4A is nationalized health insurance if not quite nationalized healthcare, but the point remains that the only reason we don’t have major steps in this direction is because of people in power who will not let it happen.