Full disclosure, I’ve never played the game, just stumbled across it in the past and acknowledged that it was the only “use” of an NFT that leveraged the aspects of the technology well, or at least better than the ones linked to jpegs.

But who is able to mint/create those cards? Anyone or just the company?

Probably just the company, but your ownership of that card (or something that a community can acknowledge represents the card) is independent of it

Yes, proof that you owned cards in a now defunct game. The question is how much value is left at that point.

Regardless of the value of the NFT, the technology enables something that wasn’t possible before.

Barring copyright/IP law allowing it, or are we disregarding that?

Not a lawyer, so the easiest solution is just to wait until it’s in public domain. Might be impractical, but again, we’re just talking about what this technology enables.

If someone wanted to take over they might just buy out the old company and take over.

The secondary market of the “cards” can take place in between someone buying the company out, which is another boon.

At the end of the day, I’m just sharing a neat use of Blockchain. You can argue it’s not popular enough to be useful, etc., but it’s undeniable that the technology is enabling something that wasn’t possible before. I’m not going to due on the hill defending it, just thought it’s neat.