If nostr truly solves spam, privacy and URI persistance, it'll likely be larger than email and the web.
URIs break all the time. Wayback Machine helps, but doesn't scale and is centralized. Email has so many spam and privacy issues. There are ways to mitigate, but it's a mess. Cookies and lack of user/identity (or lackof) has wrecked the decentralization and privacy of browsers with centralized providers.
