Honestly these people aren't stupid. The foot fetish and tickle fetish have grown immensely and have gotten more widespread attention over the last 10 years I'd say, probably longer. ESPECIALLY the foot fetish.
You have the people and celebrities who flat out ignore it or block it out, the celebrities who don't care at all, and then you have the ones who are smart and try taking advantage of the fetish for immense profit. And guess what? IT WORKS.
They make tons and tons of money off of people like us, and you know what? They're not complaining. Hell, if I were a woman, I'd make my own damn foot fetish and tickle fetish videos just to capitalize on how much money they're making. It's INSANE!