For WePay it's not about risk, it's about being compliant with the rules laid down by the bank they use. The banks don't want to be involved with payment proces

For WePay it's not about risk, it's about being compliant with the rules laid down by the bank they use. The banks don't want to be involved with payment processors who process adult-related transactions, and if companies like WePay don't play ball with the banks rules then the banks walk away and WePay has to close. There are probably situations where a company like WePay has to take the stance of better safe than sorry and not piss off the bank, because if the bank gets pissed and walks then bye-bye WePay. So when WePay sees the owner retweets the tweets encouraging violating the TOS, they can't risk losing their relationship with the bank that processes their payments. On the one hand they might alienate some customers or put someone in an unfortunate situation, on the other hand their business collapses because they can no longer process any payments. Shutting down some accounts like this one is sad, but for payment processors it's their only real choice.