Owning a car vs. renting one allows me to keep it in my garage indefinitely. If I try to keep in my garage without the ownership title, the police will come, t

Owning a car vs. renting one allows me to keep it in my garage indefinitely. If I try to keep in my garage without the ownership title, the police will come, take the car, give it to the owner, and put me in jail. What does owning a NFT of a JPEG allow me to do that I cannot do with just a saved copy of the JPEG on my hard disk? (Selling the NFT itself doesn't count, for obvious reasons.)