Wouldn't insurance companies love a lower cost one time treatment?
Sounds great, until the insurance companies figured out that the best way to make more profit with this profit cap is to pay out more and increase the premiums accordingly. [1] Obviously, the hospitals don't mind that either.
[0] https://www.healthcare.gov/health-care-law-protections/rate-...
[1] https://www.aeaweb.org/research/regulating-health-insurers-a...