It doesn’t matter if the blockchain is eternal, if this is a traditional NFT, it isn’t stored in the blockchain. All you’re buying is a link to a website where the NFT is stored. It doesn’t matter if it’s a license key, or a shitty computer generated picture of an anthropomorphic ape. When Gamestop decides to shut down the server (it will happen eventually), you lose access to your license key. If Gamestop allows you to copy your license key, you still lose access to your software when Gamestop shuts down the licensing server. I’m not sure the technology works the way you think it works.