Another reason why these payment processors needs to be regulated, and given massive fine for refusing payment to legal payments.
They're basically utilities companies now, shame on Visa and Mastercard, I know Amex isn't far off but I'll boycott these 2 duopolies whenever I can pay by other means.
Losing payment processors for an extended period has had a clear financial impact on Niconico. The YouTube rival in Japan eventually blocked adult content to meet the demands of credit cards. Even so, it has struggled to regain support from its premium members.