WoW wasn't struggling before it either. It isn't the 10 Million active players it was in 2008, 13 years ago, backed by the Warcraft franchise storyline and Arthas, but it wasn't a financially dead game it was very,very successful. Even BFA was a very, very successful expansion for Activision-Blizzard. Nor was it a socially dead game given the esports growth that occured with the MDI, or with the World First Race.
