I think you read that more cynical than I meant it 😅 I definitely didn't want to imply that you do what you do for the zaps 😬 
but yup, I guess the traditional start-up would have to be very creative to meet their (shareholder) goals on nostr.
I'm not sure if that's an "we are early" or "it can't be done" thing though.
It works to some extent for email, but there it's usually ad-driven or just really good service people want to pay for