TIDAL and Cash App working on Nostr integrations is bullish as hell for Nostr's ecosystem as a whole. And, it shouldn't be all that surprising either. Block's recent shareholder newsletter mentioned Nostr and Zaps. These may seem like a minor feats, but they are not. They're huge. They're showcasing how developers and businesses alike can integrate as little or as much as Nostr as they desire, due to Nostr being an open and permissionless protocol.
Interoperability is how we #grownostr and how we win.