Well, for one, if it's paid sex of this kind, it's a very clear transaction, with a limited time/interpersonal commitment.
And, two, you're comparing apples to oranges. It's a pretty small segment of people who work in the sex trade, (less than 1% of the world's population). Regular women are going have a different set of expectations, needs, and desires for intimacy to happen.
And finally, as a young man I used to think women gatekept the pussy. Maybe they do. But it's theirs to gatekeep. And, frankly, men should probably be more selective. Men shouldn't be so willing to give it up.