Perhaps it does not actually offer an advantage when they are compared to a centralized system of tickets which are already being used today. The only different thing we all would see with NFT as tickets would be those already used ones becoming collectibles in a decentralized Blockchain, like Ethereum, for example... so we would be talking about the same issue which led most of the NTFs to their downfall, their especulative nature.

This technology has actual use cases in the the world, when comes to proving ownership in a decentralized way, that is for sure, but people already see very convenient to rely their ownership on centralized registers and the laws of their countries, instead a Blockchain.