As a woman, I disagree with all of this.
To further note...
Many women struggle with orgasm, can't reach orgasm, or have never orgasmed.
Tantra is extremely different than a rub'n'tug experience.
Your average woman struggles with body issues, body dysmorphia, low self esteem, etc. Being completely naked and intimately touched by a handsome fit man is dreadful for many.
A designated lesbian spa could potentially be intimidating for someone who is simply curious, perhaps not out of the closet, or unsure what it would be like to be intimate with a woman.
To answer your question, they do. I'd say 5-10 per year. And half the time, they want to work at MUSE after one session.
Try as you might, gentlemen, there simply isn't demand.