The problem with doing a 180 now is that everything has been established for so long that the cost would be incredibly high to implement it.
I'm not a fan of the way insurance works. They could have promoted good health for over 50 years, but they took peoples' money and let them eat, drink and smoke themselves to death. I'm not saying they should have been in control of peoples' lives, but it also shows human nature at its worst- if they tell people to eat & drink better and not smoke, people would have done the opposite. The food pyramid is inverted and because of that, millions have died from cardiac/inflammatory/immune system diseases, Diabetes, Cancer and suffered from all kinds of other maladies. We know that smoking kills due to cancer, vascular disease, Emphysema/COPD, etc yet, they just took the money and when possible, denied claims because the conditions existed before changing insurers and because they pulled a fast one when changing the conditions of the policies. Then, there are the malpractice settlements that cause the cost to skyrocket and drug companies and their price gouging.
I don't like monopolies.
I don't like government controlling much of anything- military, sure. National infrastructure, sure. In theory, education and health/safety, aviation, communications, energy policy and some other things, sure but the way they tend to meat things up and waste money, they need to do it much better. The attitude of "Yeah, we screwed it up but we can increase taxes to cover the additional cost" isn't working.
If they go to a government-run health care system, they'll end up eliminating a buttload of jobs at several levels, the drug companies may go into some other area of chemistry and we'll see many other consequences; intended, or not. I haven't seen a plan that makes sense, from anyone. Just shifting gears in the middle of the race is gonna leave a mark. If they had come up with a decent plan in the '30s, we wouldn't be discussing it now but then, politicians wouldn't have anything to yammer about.