Nah, he won't "rule it", it'll just become much less of an obstacle for him now, thanks to a President who will, in all seriousness, be far more easily manipulated, one way and another, by a whole host of characters, here and abroad, than any other high-level national US politician I can think of in recent, and not-so-recent, history. (Which I think would be a much more likely for sponsoring election-related hacking, assuming it did in fact happen, than any sort of actual, specific "conspiracy". Though who knows, maybe even that's true... At this point absolutely nothing would surprise me.)
President-elect or not, the man is a buffoon, and the "world's significant leaders" are going to eat The Donald for breakfast, lunch, and dinner. And then gnaw on the bones as a midnight snack...