Transparent consensus about the data can not be achieved with a few database tables.
and why is that needed?
The ticketing use case could work precisely because a ticket is just a pointer. Access to the actual venue/seat would still need to be verified in person, but the issuing of tickets and transactions in the primary/secondary markets are the nasty parts that are exploited by Ticketmaster and gives them so much moat.
And someone in the real world has to look at that and let the person through the door, how does the ticket being an NFT help that at all compared to a database entry with a ticket ID tied to a name and requiring ID? Even if it was an NFT how does that help when you have no control over the system that maps NFTs to seats? Come to think of it, an NFT would just encourage scalping as they are inherantly tradeable and so vulnerable to buying by anonymous accounts and then reselling.