Nostr is for freedom and self-sovereignty, and those are and will always be more inconvenient relative to centralized solutions. That’s why Nostr will always be niche. Becoming mainstream means facing preassure from regulators and governments. With current relay centralization that would be bad news for Nostr, for freedom and self-sovereignty. As a niche protocol Nostr will never die, becoming a relevant source of freedom for the average Joe, still a long way to go, if desirable at all.