That's not how NFTs work. Your idea would at least have some value.I can see the value of an electronic piece of art that only you, the owner, can display digitally at high resolution. Everyone else has a poopy screenshot. All depends on how much you love that painting. I never played Call of Cthulhu so it doesn't mean anything to me.
Because The Blockchain is 100% public facing, and everything you are purchasing must be in the token (stored on the blockchain) everyone has access to the high resolution jpeg.
You could, if you wanted to, create a storage portal that attaches an NFT to an account and then that account has access to the high quality item. But now you're building a custom storefront to serve images, and the NFT/crypto/Blockchain angle is 110% superfluous - as demonstrated by the fact that the Associated Press (AP) has been doing exactly what you said for a few years now, all without NFTs/Blockchain.
The only thing the blockchain adds is new ways for your items to be stolen.