"Everyone was rowing, but no one was steering," says Atlassian's Sherif Mansour. Atlassian put AI in the hands of thousands of engineers. The speed gains were real. Then they crashed. Because nobody was making the decisions. PMs went from a 1:10 ratio with engineers to feeling like 1:40. "If the person who's supposed to be steering is vibe coding, they're spending no time actually directing the ship."