I don't have pr0n industry experience, but I worked for the largest merchant acquirer (MA) (the orgs that allow merchants to accept CCs) in the U.S. The merchant acquirer ecosystem has a pyramid structure where many Independent Sales Organizations (ISOs) service specific industries while re-selling CC acceptance from ~6 companies (~80%+ market share). These pr0n companies pay monthly rates that correspond with their chargeback numbers, etc and do not deal directly with the MAs.
