Before the Walking Dead, I don't recall Marvel turning their heroes into Zombies for other zombie genre movies...
I also don't recall Archie having an afterlife, or any of the other zombie inspired comic.
We can all speculate when the book will fail, but what about discussing how much TWD has influenced pop culture in recent years.
Plus, as someone else posted recently, I don't see threads dedicated to the failing of other keys. The WD is a phenomenon that bothers some here. Why I don't know but perhaps we can accept it and move on.