I’ve read a thread at reddit today: Why Isn’t WildStar more successful?
My answer: The same reason why VR not popular in MMORPG – it’s hurts to play it a lot, you got dizzy. WildStar arcade combat was amazing in concept, but in reality it made people sick after a while of playing this game. I felt tired after playing this game for hour or too. So I (and a lot of other players) dropped it even before reaching lvl 20.