I work in an extremely saturated market in Southern California. Own my practice and my building. Started from scratch after working for a group for 10 years. Practice is profitable even in an area saturated with HMOs like Kaiser. Did anesthesia residency but never practiced anesthesia so can’t comment on that. But will say pain is 100% the way to go if you enjoy the work, have good outcomes with procedures , practice ethically, and are willing to learn billing, coding, marketing, business in general. My 2 cents.