This is precisely what my former psychiatrist of 18 years admitted to me during our final appointment, when she was also planning to end her medical career (which she did less than a year later). She stated that I was far beyond being helped by any modality in existence, and that economic profit was her sole motive for urging me not to "off" myself at the end of visits between us over the final few years of our association.
What might have damaged her could have been her business card with my body, and a suicide note blaming her for my demise, but in that event, her own notes and records on me would have been her defense. (In actuality, she did do the very best she could until shortly before closing her practice, when she illegally refused to refer me for ECT despite my hard push to attempt that treatment. But in a few months, my next and current psychiatrist did get me to about 40 sessions of ECT, which did indeed fail as my original psychiatrist predicted. I'd simply had major depressive disorder for far too long to be treatable.)
My current psychiatrist's only function is sleep medication management, pending the development of some new treatment that I might be a suitable candidate for, but he concedes I will be instantly eligible for psychiatrist administered euthanasia the instant it becomes legal in the United States. (I expect this to happen within the next four years through judicial activism.)