No, we don't. IPFS guarantees that the owner can host their own NFT forever (there are multiple pinning services if they don't want to run a server). This is the best possible model. If even the owner doesn't give a shit, why should anybody else?
It's true that most NFT buyers have zero idea how this works. In 2 years multiple shitty NFTs are going to turn into 404. This is fine - people will learn to only buy images that use ipfs.