User blog comment:Damac1214/Call of Duty 2014 Being Developed by Sledgehammer Games, Call of Duty Moving to Three Year Development Cycle/@comment-5189447-20140207083512/@comment-1187559-20140207105154

You are aware in the business world "successful" just means "made a profit". As long as there's a profit in a series, there's gong to be continuations. It's not a case of if you dislike a game and they happen to make a new one. Just look how many games Final Fantasy has. Or Sonic or Mario.