Zaps are fun but for normies fiat rules unless zaps allow them to avoid disclosing their full income. So fiat wins but taxes win out. In other words the service where you can earn the most and pay the least amount of taxes wins. I think building apps that high utility, style and UI prowess is where to focus in the near term. Make nostr based apis much easier to use for main streamers. The economic models for success will be unique to each nostr use case. Nostr Twitter is a POC for the potential for nostr not the finished product bc there will be many.