Think of it like a freshly printed 10 dollar bill - it's all unique because of the serial number, and there's no two bills with the identical serial number (in theory on bills... in practice on crypto it is truly unique)
Does the "proof of ownership" actually map onto anything in the real world? It sounds like people are paying out the nose for a notion of "this is mine" instead of "this is mine, and the courts will back me up." Who's actually respecting these ownership claims to justify the cost?
How is this any different from those "name a star after your sweetie" scams?
But for now, it's more profitable for people to keep them actually unique and ride the wave of ridiculous money.
And no, it's not really any different than selling naming rights to something that can't be owned, and selling it to multiple people. I'm sure those certificates have a number on them, too.
Like normal tokens that doesn't stop people from attributing goods (PRQ), value (BTC) or rights (Deal with it NFT).
Compared to selling physical named rights buyers can verify supply, see previous prices and sellers can optionally take commission on every sale.