COD Ghosts sales decline "worring"

according to analysts http://www.computerandvideogames.com/442762/call-of-duty-ghosts-sales-decline-troubling-says-analyst/

I tell you what is worrying a game that is the same each year selling loads and some really excellent games selling almost nothing, that's worrying!

COD decline NEEDED to happen, to restore my faith in the industry. The series made Activision very arrogant.
I can't shake of the impression that when those people left Infinity Ward they did so because they wanted to make a different game and Activision would not let them, explains why they went crazy. (Activision went crazy)

IW are great (well I suppose were now) developers and I can tell you that working in the games industry in the 90's, you do hear what players are thinking about your game. If its in a mag, online ect

I believe they were well aware of consumer backlash and wanted a different game, but big Activision could not take the risk (which is the problem with big publishers when games get too big). Now look at them Main IW staff left and working on Titanfall, that is getting all the excellent news, and hype and what people at looking forward to.
What were Activision left with, when IW staff left MW3 and Ghosts