> is precisely zero to indicate that such an NFT would increase in value with an artist's popularity.

That's definitely how art works in the real world, I don't know why it would change here.

> Also, precisely zero of that value increase would go to "support the artist" - all of the profit would go to the original speculator.

Hold up, this is exactly why NFTs are interesting. They're contracts. When minting ones, you can specify that you get N% of the purchase price when its sold again.