[algorithmsRcool]

I don't think your first point very well thought out.

Any doctor (or mechanic, accountant, etc...) could benefit by providing false/sub-standard services to keep the client returning regularly.

As for the measurement, it's almost entirely based on feedback from the patient.

I can see how a depressed or mentally ill person could be more susceptible to accepting medication that wasn't in their best interest, but that problem seems intrinsic to all medication.

[zxcvvcxz]

Wrong. Doctors would (hopefully) lose licenses and have big legal consequences. Mechanics are also subject to some form of objective measurement as even the average driver has some sense if a problem is being fixed or not.

But psychiatry? Forget it. You pay to talk to someone, they have a nice couch, soothing voice, make you feel good for an hour, but nothing really changes. But hey, I liked that hour, I should keep coming back!