There was nothing left to flip on. They had Gotti, they were closing in on the Corrozzo faction, they had good intel on the Florida crews. Gotti couldn't have known about the cramming "internet billing scam" that was on the horizon. What info (besides obviously rolling on other families) could Gotti have provided at the time on the Gambino's? He wasn't gonna roll on One Eyed Pete or Junior, so who was there at the time that essentially would have been worth it to the Federal Government more so than Gotti finally behind bars after mocking the system for years?