Well, maybe, though?
I mean, feet fetish folks used to be the 'are you fucking kidding me?' lucrative market. I know a lot of folks talk big about the furries having DEEP POCKETS for porn/porn art, but...
That said, I did read of a single dude out there who was straight up commissioning pornstars to do a particular thing in a bid to kickstart his fetish into a genre.
Heh.