The publisher mints the NFT. As the creator of the NFT, their wallet will automatically be given a percentage of future sales through smart contracts.

When it goes mainstream, it won't feel shoehorned at all. You probably won't even know you're using the technology unless they decide to emphasize it in marketing materials.

Right now, how would you re-sell a digital game and verify it's an authentic originally purchased copy? Blockchain tech allows for this. That's the incentive for end users. They can know where the file originated and trust the seller. You're not buying a stupid trading card, you're buying digital media with a certificate of authenticity attached.

Edit to add: I'm pro-piracy and generally anti-blockchain (especially as currently used, where we all pretend it's stonks).