what is the point of this extremely unlikely hypothetical?

you could say http was dead 20 years ago too but it just mutated and the same base architecture has continued on.

in fact, nostr's not really that innovative for architecture, what is great about it is that it's a relay/broadcast system that is so simple that anyone could join the network with minimal work.

so, yeah, who cares if nostr doesn't make it, its babies will.