[cloudwalking]

Trust. People are more eager to purchase something if it's not tied to a specific company or platform. This is why art NFTs are so popular -- nobody trusts a single company (OpenSea, Foundation, Bitski, et al) to stick around forever, but the NFTs purchased are platform-agnostic. This played out explicitly recently, when "hic et nunc", a Tezos NFT website, shutdown suddenly. No NFTs were lost; everything people had purchased lives on the blockchain, and any other Tezos NFT website can display and sell them.

[pkage]

Weren't a lot of NFTs sold simply JSON blobs of metadata pointing at a web resource from some company? I remember seeing Cloudinary in some of the Beeple NFTs. I think some are pinned to IPFS now, but still that doesn't protect the NFT from link rot.

[ishjoh]

You are correct. IPFS attempts to address this issue by giving the asset a hash, so if no computer/server connected to the IPFS network has the asset, and you the owner have it, you could re-upload it to an IPFS server or join the network using your computer and the link will work again.

[miracle2k]

All you need is for the ledger to contain a hash of the file, and one of the people interesting in ownership of the NFT to keep a copy of the file around.

[AnIdiotOnTheNet]

If the NFT is for a resource that is not in some way restricted, say because it is used for access to some asset in a game, then what purpose does it serve? You could claim that "oh, that NFT allows you to use that asset for that game that went under in a hypothetical future game that would recognize it", but I could just as easily say some hypothetical future game could just use that asset without the NFT at all.