Whether title to a house, or entry ticket to a concert, those give you a practical, real world ability to do something. You can live in the house (or allow someone else to and charge them rent), and the government will defend this right for you. You can do neither things if you don't own the house. (well maybe you can live in it if you pay rent to someone who does) You can attend the concert if you have a ticket.

If you own an NFT, you get no practical real world benefits.