#5. Vince McMahon Jr. takes over WWWF.

Prior to the advent of Vince McMahon Jr. as the CEO of WWE, wrestling was divided into regional territories. While there were no laws preventing organizations from having shows in each other's respective territories, there was still a 'gentlemen's agreement' that such things would not happen.
That all changed when Vince took over the then WWWF from his father, Vince Sr. Suddenly the senior McMahon was inundated with calls from his peers, angrily demanding that his son stop having shows in their territories.
Look who just shut down all of Tony Khan's critics! More HERE.
However, there would be no stopping McMahon Jr. He successfully built the re-christened WWF into a juggernaut that has known few rivals during its run. Vince's complete overhaul of the wrestling industry has changed the sport irrevocably.