So I'm obviously not privy to internal Anthem discussions but I'll speculate on what happened there based on industry trends. There has been a huge increase in anesthesia costs over the past several years and I suspect that Anthem's self-funded employer customers are pushing Anthem to find ways to cut those expenses. Most anesthesiologists work in private practices rather than as employees of hospitals or surgery centers. Private equity firms have been buying up those practices and establishing effective monopolies in some regions, then jacking their rates up. Anthem handled the messaging around this issue horribly but I kind of understand why they tried to impose some limits. It's not like patients would be denied necessary care or anesthesiologists wouldn't be paid, the insurance would just cap the maximum charges for certain procedures.
https://www.beckersasc.com/anesthesia/private-equity-has-a-g...
Ultimately only a small percentage of the total money in the healthcare system goes to payer (insurance company) profits. Much larger portions flow to providers, pharmaceutical companies, and device manufacturers. So as far as reforming the system we can maybe get a little savings by squeezing insurers but it's not going to solve any of the fundamental problems.