I'm not convinced you have the whole story, Begaster:
1) Most middle-class families CAN afford routine healthcare. $4 dollar prescriptions and office visits CAN and PROBABLY SHOULD be paid for out of pocket. The concept of
insurance should not apply to routine primary, preventative care that we all know we will need each year.
Insurance is to smooth consumption/loss in the case of
unexpected shocks.
As a student, I'm required to have one of the school-offered programs that distorts healthcare consumption. My wife is not, and considering that she is generally healthy, we opt for a much lower premium and pay for her primary care from our checking account.
2) Technology advances are BY FAR the biggest driver for increasing costs over the last 20 years. That's fairly well-documented, and hopefully that won't change even with a socialized system. Remember that we do all the R&D for pretty much everything and probably don't even extract marginal cost when we export it to other countries.
3)America is quite a bit less healthy than Canada. Gregory Mankiw is a pretty good economist (In interest of impartiality, I'll tell you up front that he was Bush's lead economic advisor for awhile) and has a few ideas about things that need to be explored before we can simply point to infant mortality and life expectancy as how much more "bang for their healthcare buck" Canada is getting than the US.
Mankiw in NYT