As stupid as it is, what you describe IS exactly "baseball cards in the blockchain", because each individual card/nft can only be owned by one person at a time.
The difference with baseball cards (apart from not being physical) is that most nft projects are combinatorial, so they make 10000 different cards, constructed from combinations of a much smaller number of "traits". That way the artist only has to draw say 25 faces, 20 hats, 20 eye glasses etc.
With baseball cards you'd instead make 100 different cards, and then print 1000s of copies of each. You could do that with NFTs, but you don't. The reason for that is probably that you can't sell NFTs in sealed packages where 95% of the cards will be uninteresting. I guess you could, but again you don't.
The difference with baseball cards (apart from not being physical) is that most nft projects are combinatorial, so they make 10000 different cards, constructed from combinations of a much smaller number of "traits". That way the artist only has to draw say 25 faces, 20 hats, 20 eye glasses etc.
With baseball cards you'd instead make 100 different cards, and then print 1000s of copies of each. You could do that with NFTs, but you don't. The reason for that is probably that you can't sell NFTs in sealed packages where 95% of the cards will be uninteresting. I guess you could, but again you don't.