Readers added context to the link: www.mastercard.com/us/en/news-and-trends/press/20 ...
Both Steam and Itch have stated their removal of adult content came from pressure by payment processors, including Mastercard.
theguardian.com/games/2025/jul…
Furthermore, Mastercard and other payment processors have a documented history of refusing service to Japanese retailers over legal adult content.
otakuusamagazine.com/visa-and-maste…