When E-sports goes "big media" how long before ratings influence game balance?

So i'm sitting here pondering the nature of the Cosmos and whatnot and I had this thought: If E-Sports becomes a normalized form of media, how long before devs start balancing the game with the specific goal being to keep viewership high? How long before balance changes occur that are aimed at making a certain dominate region less so while producing a championship team from the "underdog" region.

I mean in a way there's already been some changes to the game to make it more enjoyable for viewers, like how you literally have forever and a day to string a pentakill (or any multikill really) together these days just for the sake of shoutcasters being able to whip the crowd into a frenzy yelling "PENTAKILLLLLLLLLLLLLLLLLLLLLL"