Its really a rather obvious and simple proof;

When you think of a prostitute, what image comes to mind?

I am guessing some woman smoking a cigarette with bad teeth on a corner somewhere by a shitty motel? But why does she have to have shitty teeth, sex workers shouldn't be discriminated against right?

You following?

So whats my point;

Notice that most likely you probably immediately imagine that the prostitute is a woman? How you glossed over that key and fundamental variable?

Of course not; there simply isn't anywhere NEAR the demand for male prostitutes than there is for female.

Its basic sexual economics 101.

The amount of demand for female sexual energy is laughably higher than that of male sexual energy, the currency of the sexual market place.