Decentralized approaches to digital rights management (DRM)

I recently saw the post about NFT books and it got me thinking about how you could prevent the spread of a pdf of a book, especially if it is already on the blockchain? Maybe if it was an nft a centralized authority could tell whoever is pinning the content itself onto ipfs to stop?

Or is this the whole point of crypto. Like Pandora’s box, once information has been released it cannot be contained. The solution I see would be establishing a culture where tipping the original author (owner/minter of the book NFT) is the norm if you enjoyed the book.