>>8911559
Well first, that's not just on Steam, or even for solely games. This is taken from Civitai's latest policy update.

Second, sure they may be banning bad stuff like incest or sexual drug use now, but extrapolate the fact that they can regulate where your money goes to. What if they go further? Restricting who can buy what based on, say, race, sexuality, political leanings, etc? Sure, we're far off from that right now, but you need to take this to its logical conclusion.