#1 I can't remember the last patient that I couldn't treat exactly the way that I wanted to treat because of financial issues. Granted it helps to be in a specialty and area with an essentially single payer healthcare system, but 30%? I'd like to see some data on that before throwing around a huge number like that. I mean every once in a while some insurance won't let me put someone on Eliquis, but it isn't like we don't have other options.
#2 In 6 years of clinical medicine I've run into a fair bit of annoying administrative/policy issues. But, I've yet to see one that impacted my ability or another physician's ability to care for a patient effectively. Does it happen? I'm sure. But commonly? Kinda doubt it.
#3 Compliance is an issue. Does it diminish the effectiveness of your care? Yes, sometimes drastically. Are you still helping them, even if they aren't compliant? Yes.
Every single person that I know who burned out/quit/did something else should not have gone to medical school in the first place. They had unrealistic expectations of something. None of them went into medicine to "help people". They went into it for the money, the prestige, the job security, the "science", the "tech" etc. Is there a lot of bureaucratic nonsense in medicine? Absolutely, just like any other job. But, medicine offers unparalleled opportunity to make a direct impact on people's health and lives. It certainly doesn't have to be the only motivator, but if it isn't one of main ones, there is no reason to go into medicine.