mmm....interesting.
Yeah, of course if they stop paying her then she's out of a job, but thats the same with any self-employed service worker.
I'd agree that this was a psychological problem, men who have control issues who want to explore what it feels like to not be in control...while still retaining the ultimate control of paying for it.
But I can still sympathise with her wanting to make a living out it, gotta be better than the more "traditional" form. There are also quite a lot of black women in "financial domination", where they are unpleasant to men and the men give them money in response.