Psychiatrist turned computer scientist-no relation there at all. Psychiatrists are usually very extroverted talkative and people loving. Computer scientist/programmers probably have to spend most of their time alone. I can see why the person didnt enjoy psychiatry at all.
I think personally that there is very little support out there for Doctors who are seeking other careers outside medicine. The medical curriculum is designed in such a way that if you study medicine you have to practise as a doctor other wise you'll always have something to lose unless you're very lucky to get a good job outside medicine-eg banking. Most medical students would have accumulated a lot of debt on qualifying and hence the need to get working and the easiest way is to just remain in medicine.
Also, medicine easily provides a good steady income, again making leaving medicine a more difficult decision. Its also worth saying that only a few proportion of doctors decide to leave the profession for another career.
Either way, would love to hear your views regarding this.