I think what we're forgetting here, and jhood alluded to it, is that the most important part of capitalism IMO is the consumer. The consumer must be responsible. When people pay what I would consider ridiculous prices for something, like $400 for a stripped blemished lower, they are not being responsible. When you give money to a company that doesn't respect your beliefs, you are not being responsible. Of course it's not always avoidable. But you can't have "robber barons" and "monopolies" without consumers. The more free the market, the more responsible we as consumers have to be.
If you don't like being responsible for yourself, then by all means let the government make decisions for you in moderation.
Sure, but what good is that going to do you when nobody can afford it? Not to mention you're gonna have a lot of pissed off people. And then somebody is just going to make it cheaper and put you out of business and now you have a bunch of expired insulin or flu shots.