When I first started seeing my old T she was a typical middle class T working in a community centre for youth (up to age 25). During the course of my therapy her husband's business took off exponentially and they became super-exremely billion- dollar business kind of wealthy. It enabled her to open a beautiful private practice in one of the wealthiest areas in town, where myself and several others from the community centre were able to continue therapy with her as pro bono clients for many more years.
About ten years after I left therapy with her (I moved to another city) I had the opportunity to return to the city for about a month. I asked if I could have an appointment with her, and told her I would be able to pay her $170ph fee. She 'insisted' that I came in once a week for the duration of my visit, and when I replied that I could only afford to see her the one time she said she wanted me to pay $170 in total for four visits. She wrote something like "I don't want something as unimportant as money to prevent us from seeing each other."
My old T was in the very fortunate position of not having to worry about money at all. I *know* she did her job purely because that was what she loved to do.

Edited to add: My T is nearing retirement age now, but she could have retired years ago. She only works two days a week now. The other three week days she looks after her young grandchildren.
Oh, and she lives in a multimillion dollar mansion on one of the best beachfronts in the country, and goes on at least several first class vacations to exotic locations every year.