I'm a big blockchain advocate and I can't see any point to NFTs either, other than for perhaps tracking ownership of specific physical objects. For digital files of any kind, there's no exclusivity that "ownership" confers.
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.
There’s no scarcity. In the physical world, any copies are simply approximations. In the digital world, they’re exactly identical.