I disagree actually, but I respect your points.
Black Ops is going to be fucking huge, no way around that.
But lets look into the future. Infinity Ward is a ghost town full of scabs (replacements), I honestly don't expect Modern Warfare 3 to be a great game which will be a big blow to the Call of Duty series. Then after MW3 (which I expect to suck with the combination of how bad MW2 was and the situation at IW) we will probably have a COD game created by Sledgehammer games which will most likely suck and be a lousy spinoff type game; another blow to the Call of Duty series.
Then we also have to look at competition. There's going to be a Bad Company 3 which isn't a threat to take Call of Duty's crown as king of the FPS but will take some sales away from Call of Duty. Then there'll be a Medal of Honor 2 eventually too which won't do much but is another option for people. And here's the game I think could actually take the crown from Call of Duty; Respawn Entertainment's (aka Infinity Ward 2) future project which EA will probably hype like there's no tomorrow. Oh and we can't forget about Bungie's next game which will probably be a FPS, although Activision probably won't be stupid enough to pit Bungie's new game against Call of Duty.
That's just my take on things. Basically to sum it up in a sentence: Increased competition in the FPS market especially from Respawn Entertainment, deterioring quality in the CoD series since CoD4 and oversaturation of CoD games thanks to Treyarch, Sledgehammer and what's left of IW all working on CoD games will be the death of Call of Duty.
ALTERNATE WAY COD WILL BE KILLED:
Bobby Kotick will decide to put a subscription on Call of Duty for $15 a month which kill Call of Duty very fast and people will go play Respawn Entertainmen's new game.
