wow only came with a new expansion every 2-3 years so that was enough time for people to buy the newest expansion. wow is devoid of relevant content, you think it would have a lot of playable content with the game being so old but the contrary is true. all players are focused on the latest released end game raid and the rest of the content is irrelevant.  starcraft 2 already had problems with it releasing their game with 3 different expansions. playerbase numbers dropped off a cliff after wings of liberty which was the first release.
Netherlands