> If you could solve name-squatting would you find it useful?

yes, but my guess is that it's unsolvable. Why? because it requires someone/something to know that "Apple" it's one npub and not all others, so it has to have knowledge of meatspace, of what "Apple Inc" the company listed on the stock exchange is. Such a protocol would have to have knowledge outside of its boundaries, and in some cases should rely on trusted third parties like in the example with stock exchange, which become trusted.

Also, the use case you mention can be solved by adding the QR code of the npub next to the name, or by looking at the set of npubs next to the platform/that is interviewing the creator (I prefer the first)