[grumbel]

First Sale doctrine or similar laws exist in many countries, so they are required to allow used sales (e.g. https://www.hallgrimgames.com/blog/2019/9/22/eu-steam-resale). NFTs provide a means to make that practical beyond the boundaries of a single store front. So far these laws have never been enforced in the digital world however, partly because it has never been practical.

Another reason would be that game developers and movie studies start to sell media on their own. So the store would just be a service to download your games from, not the only source of your games. If all the stores stop carrying the media and the studio went out of business, archive.org or similar could take over, as the NFT proofs ownership and you don't have to wait 90 years until copyright expires. Right now we have the situation that some games are already impossible to get legally, as no store caries them and used sales of digital goods are impossible.

Finally, it wouldn't be Amazon starting this, they already have their market dominance and no need to improve the service, it would be the newly arriving competition that would start doing this. Amazon would then have to follow suit to not fall behind. Somebody like Epic might be big enough to get this going and they don't seem to be fundamentally opposed to NFTs.

This is of course all just wishful thinking, but we really need a better way deal with copyright in the digital world. Having media just get lost for 90 years due to there being no way to buy used really isn't acceptable.