My top 5 takeaways from Tanay, @wisprflow's founder, on building AI products that stick: 1. "We no longer have ARR as a North Star" AI companies can hit millions in ARR from new users who churn fast, then get trapped using paid spend to fuel unsustainable growth. Instead, focus on retention and habit formation—70% of Wispr's users retain every year. 2. To help users form habits, study games From Tanay: "Most software is terrible at building habits. I look at games." He models Wispr Flow…