By "not very good for Blizzard", you're referring to Classic-Wrath, when we didn't have stuff like LFR and such, right? Also known as the most popular years of WoW when the subscriber base was at its' highest? Because Blizzard didn't start adding stuff for making raids more accessible to people with lives until Cataclysm... and if the current subscriber number is anything to go by, things sure as hell didn't get "much better" for Blizzard.