If any Nostr company is in a position to pivot, it's Primal.
Discussion
But they will have to charge 😂
All p2p web platforms will need to charge for something, it's expensive to provide such things!
Being charged means:
1. Concentration of service providers;
2. Network topology effects;
3. Progmatic dependancies.
Making self-hosting easy seems to be the better solution than concentrating disproportionate influence in the hands service providers and centralized hubs. Besides, this was your critique of nostr relay model.
The difference is that Pubky makes centralized use cases (like social media, search, marketplaces) possible again thanks to PKDNS and the WoT itself being decentralized across users.
You can't scale an entirely p2p web to be useful.