Bill "lost" Brady and Gronk when it finally dawned on them that they weren't going to run the team, their duplicitous attempts to curry special favor from the Krafts wasn't going to work and when they finally realized that, despite their considerable intelligence and ability to manipulate people, Bill is smarter than both of them put together. That's when they quit on the team in terms of being "all in." They continued with the physical effort, but they mentally checked out. Hell, Brady evidently was conniving to join the Dolphins long before he left here, and, Gronk was mentally gone beginning with his "Vroom, vroom" on stage performance. They just quit.