So if the original issuer of an NFT goes out of business I, as another studio, can't continue to print tokens for the same asset? (I mean I guess I could print a duplicate line - but I couldn't carry on the same line).
Anyone can mint an NFT to point to anything. There's no guarantee beyond what's traceable on the blockchain. Once the NFT "points" to something outside of the blockchain, then all bets are off.