It's an interesting theory. Sort of like what would a dog do when he catches the car. Trump's unexpected success coupled with his ego could well explain why he seems focused on destroying the GOP, not winning the Presidency. The former's the goal he can achieve, and can walk away from with his fortune and mobility intact. The latter goal is no doubt unattainable, and since he knows that there's no reason to prepare for the responsibility. He'll lose, claim his martyrdom, and the candidate that most resembles him - Hillary Clinton - will gain the office.