We have of course been able to buy and own more or less exlusive licenses to digital goods for a long time now. The video game market is now larger than the music and film industries combined and quickly becoming entirely digital.
And if it's own work and the more literal form of ownership rather than just a license to it, these rights are well protected in law and don't really use to become a problem? Unless you live in a state with state-sponsored copyright infringement, but these would absolutely not respect NFT's and proofs of ownership either.
But if you for some reason need to support the specific case of proving original ownership, NFT is a technology that can help although I think this is becoming a too niche use for a widespread internet-wide revolution. It's still digital which can be made into perfect copies and I think this alone reduces the appeal even if it would come with a sticker that validates the product. At least it does so for me. Sure it's "useful" kind of like how an MD5 sum is, and now we get even further along the way than that but... it's still digital goods with everything that implies...