Specialist shortages and queues are one huge issue. But the other problem is technology lag. The best diagnostic imaging equipment in the US is just as good as the best equipment in Canada. But at any time, the US may be 50% converted to the best stuff while Canada remains only 2% converted.
It's easy to think that a little time lag is no big deal, but my mother's mother died early of a coronary artery blockage that could have been addressed by a stent that become mainstream about two years after her death.
And the other problem with lag is how it impacts drugs and devices all over the world. We would make DI equipment at huge costs (billions of dollar projects) knowing that we'd get a big pop in the US because many people would upgrade early. Then we'd begin selling it into the rest of the world knowing that sales would dribble in as opposed to a big influx. Without that initial pop, the entire pipeline will be shifted backward years.
So what would be wrong with universal health care with mostly older, less expensive technology and private insurance/private pay for cutting edge stuff for those that can afford it?
Isn't that the best of both worlds?