Eventually every handle from every ecosystem/platform will resolve to a sovereign npub that can send and receive zaps for universal payment.
Below, is an example of zapping a domain name address using the system I built that supports NIP-05. But it could easily be Twitter, BlueSky, etc.
The biggest advantage that #nostr has right now is its deeply integrated unstoppable payment capability in the form of zaps.
One day, I hope everyone in accepting payments can just say:
‘No apps, just zaps!’