Financial domination is a fetish where men, who are usually in powerful corporate positions, want to give up control. They're usually in charge, but this lets them not be. Sometimes it's via video chat, sometimes its just a video they purchase, but every time it has to do with being called names, told they're not good enough or just worthless "pay piggies". The girls will demand the men give them money, and they do. Usually there's not even any nudity unless its the man getting naked. I've seen some crazy shit with FinDom. Guys with broomsticks up their asses and womens clothes on... whatever the girl wants to do to humiliate the guy.
Sometimes they let the girls control their computer remotely with access to go through their email, send themselves money, etc, while they just watch with their dick in their hand.
It's odd and I don't understand it, but again, I'm not here to judge. I'm here to make money.
One studio I know demanded a man buy her a brand new BMW M3 convertible, and he did. He gave her $10k in cash per month until it was paid off. That's an $80k car.