The thing that keeps your very rational suggestions from being implemented is emotionalism. Medical care is life or death. Suggest that some should go without because they can't pay and people will screech that you're putting profits over lives. Never mind that such a policy would, over the long run, result in more effective, more affordable treatments becoming available to more people.

I'd be interested to see the same price chart for veterinary care, which so far as I know isn't subjected to the same insane, market distorting insurance system.