How do you get the chances of everyone crying out to be significantly low? If someone buys gil and gets banned they're not gonna sit and think 'oh I'm banned now because I breached the ToS on purpose'. They're gonna think that they want to carry on playing especially because they've spent extra money on it so they're gonna come here and lie through their teeth in order to get their account back. Gilselling will never cease until gilbuying does.