Plus, it'll disrupt the Amazon stronghold on online selling, giving it back to communities! Eventually, I'd want it to be its own client, sorta like the Amazon app, but the content is not hosted nor controlled by me.

And just in case people still want to use their own domain name, they can install an embedded client that just opens the web app to their shop without the ability to navigate to other shops (so it feels like they have real ownership), and their website can also act as a private-write, public-read relay locked to their npub or a multisig (for recoverability), so the actual content of their shop would still be a Nostr thing.