Nfts itself aren't the "game changer" the game changer is the combination of nfts and smart contracts, where various attributes are defined for the nfts, and they are not changeable.
In the steam marketplace, the developer can change things easily, like changing a super rare card in a collectable card game to a common card.
In the steam marketplace, the developer can change things easily, like changing a super rare card in a collectable card game to a common card.