does not agree with my intuition at all

Look beyond your own social circle

Oh I did, the figures for any social circle in which I am has a rate of 0% .

Do you have a source in mind

Look e.g. at the numbers for the so-called sugar daddies/sugar babies sites. (here or here, etc.)

I may be misinterpreting, but wouldn't that fall within the "current real world rate" of prostitution I mentioned?

But I guess as to the question asked, of a data source for the prostitution rate change at six figure rates, that might be a hard (albeit perhaps quite fun for researchers) study to run, so I'll just take that add a no.

Again, total tangent. I agree with your base claim.