Come on this is literally the only scenario where NFTs make sense. Cross game support of NFTs make no sense because the developers see zero incentives to allow

Come on this is literally the only scenario where NFTs make sense. Cross game support of NFTs make no sense because the developers see zero incentives to allow competing content but if it is the same game hosted by a variety of people then on hundreds of servers then interoperability has the benefit that your content will be available on other servers and therefore you also have incentives to accept other people's content. The only problem is that Blockchain is too expensive. Who wants to pay excessive fees for inconsequential in-game items? Who wants to host a full Ethereum node? Hardly anyone.