You will still listen to it, watching movies, advertisements, playing video games…

You’re adding another person to the equation (the player that sells their game) and everyone is supposed to profit? Someone will make a loss compared to the status quo for this to work out and it’s never the marketplace operator.

Hmm, kind of an open source Steam client that shares game files in a secure and verified peer to peer manner and only lets users play that have the corresponding NFT in their connected wallet. Now you’d only need an incentive for someone to develop something better and way more complex than Steam without making anything close to the same profit from it. Also you’d need a reason for publishers to sell their games this way, if after half a year they won’t sell a single copy anymore, as there is always someone that offers their used license cheaper.

Touching up your photograph or painting does not make it mine.

artist’s or ai generated?