The discussion is about whether it is unethical to keep a patient in therapy for years--that was the title of your thread. The discussion is not limited only to talk of psychologists who are not ethical and competent. Could it be you have already decided that patients in therapy for longer than 3 years have therapists who are unethical? If so, I wonder why you asked for others' views if you have already made up your mind? My own view is that some people have problems that take longer than 3 years to work through (e.g. significant childhood trauma). Most people don't take that long, but some do.