This^ The road to Linux gaming has already been paved. It’s just missing one or two exits.

This person takes advantage of people who are unaware that they could just get it for free as well.

However, if this person is putting in an effort to sell this item (like advertisement or creating a platform to distribute this item more easily) then I don’t see anything wrong in charging money for that.

With software there would be infinite copies of that free item for everyone to get. So the dick move is to sell it to people who are unaware that they could get it for free.