I don't know why you would assume that you need "tons of guys" to make a decent living but yes, the business is out there.  I have an escort lady friend down in South Jersey who also does work as a Dom.  She has actually been retired from the escorting trade for a while though she still sees me and at least one or two of her other regs. She makes the majority of her money as a Dom working with a partner in the South Jersey/Philly area.  Her hourly rate for Dom work is lower than when she was an escort but she gets plenty of business, very few hagglers and she doesn't even have to get naked much less have sex.

I was a Domme for years before I began escorting. Correct, sex was not allowed, but there was generally a happy ending at the end of it, usually self administered.

As to are there enough guys out there to make a living at it? Hell yeah. I made more money as a Domme than I do now as an escort. But between you and me, I happen to LIKE sex too