I don’t see companies letting their intellectual property float out onto a public blockchain to be used by any other game. Unless they have total control over how that IP is used, I don’t see any publishers funding games like this. I think it would even undermine their copyright if they didn’t enforce these limitations.

Think about it, a much smaller fish could offer a very similar game that uses the inventories of NFTs from GameA and become a serious threat to the business of GameA overnight by sniping the player base with the promise of keeping their inventory.