[alasdair_]

>whether the mass market wants digital possession that transcends a single centrally managed database

Even if the market wants this, it's certainly not what is being offered. If OpenSea delists your NFT in their single centrally managed database, it may as well no longer exist.

[WFHRenaissance]

This is a problem that's actively being worked on (SudoSwap as an AMM for NFTs, Scatter.art as a competitor, et cetera).