Let's not get carried away.  Nostr is built on top of http, so is part of the web.  That's the reason it's successful because the web can get through firewalls, and P2P cant.  Nostr cant replace the web since the web is a superset of nostr.  Nostr has some *design patterns* that can be used to benefit the web, and also provide a bridge to the all important bitcoin payments network.  Everything in it's right place.  The web for massive scaling, bandwidth and storage.  Nostr relays for realtime updates.  An identity and signature system that spans both.