Sure, but that’s more about Valve not pursuing violations than anything else (in other comment I also mentioned how they turn a blind eye to Humble Bundle as well). But legally they could go after silent hill f and demand it be sold for a similar value to $31.49 since some time has passed and stem users have not been offered a comparable offer. I think what’s in the clause they make people sign is more important than whether they enforce it or not, because if it was about price parity with other stores then it would be abusive (even if they didn’t enforced it always), but if it is about selling something they provide then it’s not abusive even if they do enforced it always.