I didn't even think about the revenue model. I had, perhaps erroneously, presumed their decision was based on simplicity of build that would save time and capital. If you're charging per message, or a portion of each zap I make, great, all the power to you. I only paid attention to the fact Nostr PWA's/sites just work better in Keychat. And most importantly, Keychat has the most functional nsec signer out. I feel safer exploring vibe coded apps and not worrying about whether they're slop that'll lose my keys.