Nothing. Similarly, nothing stops you from photocopying physical art, or recording streamed music. The point of NFT is not uniqueness of the item, but uniquene

Nothing. Similarly, nothing stops you from photocopying physical art, or recording streamed music. The point of NFT is not uniqueness of the item, but uniqueness of the token. Some people see value in having digital proof they bought an item from the artist. Some people see it as rare collectibles.