#2: Mainstream Appeal
If you do a Google search for a rumoured story or simply a news story about an upcoming wrestling event, chances are you'll find a mix between news sites but also some of the bigger companies like ESPN and CBS covering a WWE story.
Whenever someone leaves the UFC or WWE or vice versa, several major news outlets will cover a story if an athlete leaves one sport for another as Brock Lesnar does yearly.
If Fox didn't see the potential in success by reaching a new TV deal with WWE to air SmackDown Live, they wouldn't have joined up with the biggest wrestling company in the world.
Vince McMahon loves the crossover and mainstream coverage any time something his company does pings a major news outlet.
When Ronda Rousey debuted at last year's Royal Rumble, sites like Sports Illustrated, NBC, CBS, ESPN and MMAFighting all covered the news. Any time Lesnar has made a move, major sports outlets have run stories. Even Forbes has a section dedicated to professional wrestling.