As a Canadian, I'll be the first to say that our system isn't perfect. If you've got a chronic but not life-threatening condition, like a need for knee or hip surgery, you could spend a long time on a waiting list. There are certainly lots of affluent Canadians who opt to step out of that line to get treatment at private for-profit clinics, both domestically and abroad. There's always a shortage of something. Qualified doctors, nurses, family practitioners, CT or MRI machines, etc.
That being said, if you do have a life-threatening condition, the Canadian healthcare system can work pretty well. My step father had pneumonia Nov./Dec. last year, chest xray revealed something concerning beyond the pneumonia, by early January biopsies has been done, by February he'd started radiation, six or so weeks of that, then monitoring for a while and now he's in remission. Everything moved fast, because he had a time-critical condition. Total cost to my family: zero dollars (setting aside costs for gas, parking, snacks for stress-eating, etc.). I couldn't imagine a family going through the same situation in the US.
It depends who you're comparing. For the average US or Canadian citizen, I'm sure you're correct. If you look at income levels I bet it's a different story. The poor and middle class (whatever's left of it) have to wait, the rich have the option of paying out of pocket. If I wanted to have a whole-body MRI scan done, I could get one next week for $3200. Wouldn't even need to be sick! Requires a referral, but you can "obtain one virtually from (their) physician partners" and you know their "physician partners," aren't going to turn away business.