People need to remember that while Watergate was about taking down a President, it was also about learning how to prevent a President from being taken down.
The core lessons learned were to circle the wagons, dig in heels and make sure no on breaks. A secondary lesson was to distract the public away from the scandal.
Nixon lost because not only did his own Administration people abandon him/give him up, but his allies in the Senate had as well. IF there had been no revellation of the tapes, and IF they had been destroyed, and IF his advisors hadn’t turned states evidence and IF Goldwater, Baker, etc hadn’t threatened to vote to remove in an impeachent trial, Nixon would have finished out his term.
Further, if Nixon had released the files on what Kennedy and Johnson had done in office, the GOP woundnt have been damaged by what he did.
They definitely learned how to engage in a criminal conspiracy to suborn perjury, destroy evidence, obstruct justice, etc. Hope the conspirators from top down all learn first hand the penalties for such criminal behavior.