>>8541038That's the old trope of the old salaryman/bossman with the hot BDSM mistress. Plenty of it in the western porn, but yeah - not a lot in anime/hentai.
Probably comes from all the artists being low end poorfags while the people who engage in the fetish are old richfag businessmen. So if you get lucky the artists is a spanking fan, odds are it's gonna be normal vanilla M/F stuff or F/F stuff, with a side of loli.