I am not advocating for this cash only option to be the entire system. I am merely saying that Obamacare is broken and I am glad to see alternatives emerging, given that Trump has so far failed to provide a real solution at the federal level.
Outside of an expensive, time-consuming, and almost always useless appeals process, that flat rate is all the doctors are going to get. They can take it or leave it.
There are medical codes for every imaginable procedure, and essentially every medical code has a fixed, preset amount that the insurance company will pay to have it performed.
The point is that there's no shopping around in the emergent cases. You can't say "Well, in my incapacitated, mid-stroke state, let me check the menu of the 3 nearest hospitals for the cost of a stroke admission." It ranges from "nothing to do here, looks like it was a TIA, patient demands to go home" to "We need to take your wife to the OR for an emergent craniotomy and clot removal to decompress the foramen of Monroe. Right now. Because minutes are brain cells."
Why would "shopping around" matter if the amount the doctor was going to get paid was fixed (and published) in advance?
I don't understand why you think that pre-published fees would make this (alleged) problem worse rather than better.
In the (unlikely, IMO) scenario where one hospital really was massively more expensive than another, patients will almost certainly know that in advance, just as they know that they're going to pay more at Wolfgang Puck's restaurant than McDonalds.
According to the CDC, 75% of healthcare spending in the US is spent on chronic conditions or issues comorbid with chronic conditions.
So system changes that only help with chronic conditions could still be very worthwhile.