You're so salty and yet funny.
First off, people said Warcraft would die every year and this or that game would crush WoW, and yet Warcraft is still strong and going. Same with League
Also, Overwatch won't mean anything because if it was as good as people were saying, why aren't those people playing Team Fortress 2? It's a blatant clone/rip off of a F2P game. A game in which is gonna outlast Overwatch which is comical because it's free to play.
Overwatch is going nowhere, and I don't even see why people compare it to League when TF2 is the closest comparison and overall Overwatch is a FPS with little to offer.
Fun fact... If this was still 2001 or whatever, and Overwatch came out? Halo 2 would completely destroy Overwatch and actually there will probably never be another FPS game to the extent of what Halo 2 was and meant for gaming, and oh, H2 actually had a long campaign and the story has been developing for years now.