This sort of thing gets to two critical problems of the American system: 1. It is largely designed to make money, not actually help patients. So every step in the healthcare chain that can extract a bit of value will do so, largely to boost profits. 2. Insane complexity with limited transparency. How much will something cost? Hard to tell. Will it be covered? Who knows? On the opacity, I have one informative anecdote…
In Australia I just take my blood test form to any pathology place and they do it for free (for me) and bill the government a set price from the medicare benefits schedule.
I lived in both systems. In a single payer system, the state essentially decide what is allowed and what is not. And with the state as a single payer, they also go back and forth on price with the hospitals.
It still is a better system overall but there is no places where you can just spend as much as you want on healthcare without some type of centralized supervision.