Interesting you mention escorting there, one of the few groups of people here who pay for photography are escorts. Usually solo-professionals with high-end websites and prices.

I've no interest in wedding photography, and so it is a fun niche to have fallen into. (The other large-paying niche is pictures of cats/dogs/pets for elderly/retired women.)

I suspect there is a fair amount of money to be had in a combination of scheduling/calendaring/hosting for adult-workers. There are a few meta-sites but so many of the women I talk to struggle with setting up sites, getting shut-down for ToS violations and general technology-apathy. (Despite online searching generating 50%+ of their business, the rest coming from word-of-mouth.)