Creston wrote on May 8, 2014, 17:52: How many people would you estimate raid in WoW? Thousands? Millions?
It's hard to come by good numbers but looking here it looks like there are several hundred thousand in WoW who raid on the Normal or Heroic level (excluding the people who just queue for LFR or do Flex which doesn't really count.)
Plus that's just people who've raided in the last two tiers of content. If my guild is any indication there are a lot of people who haven't raided in MoP who are interested in Wildstar.
I think if they play their cards right they can get a player base big enough to sustain their game.