Steam now bans games that "violate the standards of banks and payment processors"

[Cyran]

Mar1217 said:

The rule seems so vague in application that it basically means they either don't mean to really use it or to reserve their rights to basically ban anything they could deem inappropriate in any case.

But yeah, considering what kind of game usually transpires in the Adventure/VN category sometimes ... It isn't for the worst most likely

I think it partly option one in that they really don't want to use it but if Mastercard and Visa threaten to stop supporting steam because of content they disagree with then they will remove that content.  This is a issue a lot of adult sites have because the major credit card companies refuse to support them.