NFTs I think haven't found product market fit yet. Imagine skins in a video game. People pay good money for those even though it's "just pixels", and I think there would be sustained interest to trade and own skins in a limited run, for example, autographed by an e-sports player. Or, in a digital trading card game, decks could be represented as a bundle of NFTs, and players could rent them to participate in a tournament without having to go buy all the carts themselves.

I don't think the current model where everyone and their mom doodles something and mints an NFT is sustainable without external anchors of value.