X makes roughly $4 per user per year from ads. Robinhood makes $187 per funded customer. That 45x gap explains the new Trade button better than any everything app speech. For 18 years the trading conversation lived on this app while the money changed hands somewhere else. Stocktwits invented the cashtag back in 2008 just to organize stock talk on Twitter. People read a take, formed a conviction, then switched apps to act on it. Twitter captured the intent and monetized none of it. Robinhood…