To take Beeple's $69M NFT as an example, its JSON metadata points us to an IPFS gateway run by http://makersplace.com. Source: about 2 years ago

In theory, but if the hashed file is a JSON that contains a link for the media source of "ipfsgateway.makersplace.com/[UNIQUE STRING]", and makersplace.com goes under, wouldn't it be very challenging to recover the actual file stored on the p2p network and update the embedded link? Source: about 2 years ago

Most IPFS hash's return a JSON file that contains a link to an IPFS gateway that is hosted by the company that minted the NFT. Sure this type may not expire on its own, but if makersplace.com goes under, ipfsgateway.makersplace.com will cease to be hosting anything. Source: about 2 years ago

More likely that the art will live as long as the gateway provider lives. Even for the $65M Beeple purchase, the IPFS hash points to a gateway provided by makersplace.com, which is an NFT minting startup. If they go bust, no one maintains the IPFS gateway, and the $65M NFT points to an IPFS hash that returns a json file that contains a description, a few properties related to the NFT, and a dead link. Source: about 2 years ago

More than half of the artists $100K club sell on more than one platform, the average being two. SuperRare was the most popular amongst the sample group followed closely by MakersPlace. https://media.giphy.com/media/l0MYvOjkBiEB0zjTq/giphy.gif. Source: over 2 years ago

He also writes for coinclarity.com, which I'm sure clarifies even more coin thinks. Source: about 3 years ago