It struck me that NFT's in the context of art are basically autographs. People will pay far more than the standard value of a hardback for a hardback autographe

It struck me that NFT's in the context of art are basically autographs. People will pay far more than the standard value of a hardback for a hardback autographed by the author and even more for a first edition of a hardback autographed by the author than a second edition. It only becomes "special" because the author signed it. NFT's are basically digital autographs on something that's even cheaper (free) to copy than a book.