Earlier quoted context omitted.
as long as we have a significant portion of healthcare users who are basically fully price insensitive but not subject to any rationing, absurd US medical costs will continue.
Hard to believe you say we aren't subject to rationing when pre-authorization is as big as it is. You should see some of the proposed rules. Pre-authorization will start to use a medical language called CQL and there will be literally thousands of queries EHRs will need to implement to ensure their customers can get the care they need.
If you want to see true rationing, look to the UK (especially) or Canada (less so) where I know plenty of people who have to wait over a year to see a specialist even after doctor referral.
Meanwhile, my parents in the US at a hospital get a CT scan, MRI 'just in case' immediately (or close-to for the MRI) and pay nothing for it.