Not a gamer anymore myself (time and attention span constrains), but I still follow the industry. WOW is just old and the subscription paid model is being replaced by free2play supported by micro-transactions.
Keep it on topic as it relates to Argentina, the micro-transaction model makes these games specially attractive in emerging nations like Argentina, where there isn't a lot of disposable income to be spent on US$50 video games.
Well, it was probably one of the most successful games ever created and is still around after 10 years - so as a producer you won't shed tears even though the subscriptions go down.