Oh, you mean like Call of Duty, right?
If you have a smash hit that sells like hot cakes you don't worry about "diversification". That is for when you know your IP can't support your company.
Laughable....CoD has numerous iterations based on one core product...so yes they have DIVERSIFIED.
FD cannot rely on one title to carry the company.
1.1 World War II games
1.1.1 Call of Duty
1.1.2 Call of Duty 2
1.1.3 Call of Duty 3
1.2 Modern Warfare story arc
1.2.1 Call of Duty 4: Modern Warfare
1.2.2 Call of Duty: Modern Warfare 2
1.2.3 Call of Duty: Modern Warfare 3
1.3 Black Ops story arc
1.3.1 Call of Duty: World at War
1.3.2 Call of Duty: Black Ops
1.3.3 Call of Duty: Black Ops II
1.4 Ghosts story arc
1.4.1 Call of Duty: Ghosts
1.5 Advanced Warfare story arc
1.5.1 Call of Duty: Advanced Warfare
4 Expansions
4.1 Call of Duty: United Offensive
5 Console and handheld titles
5.1 Call of Duty: Finest Hour
5.2 Call of Duty 2: Big Red One
5.3 Call of Duty: Roads to Victory
5.4 Call of Duty: World at War – Final Fronts
5.5 Call of Duty: Modern Warfare: Mobilized
5.6 Call of Duty: Black Ops DS
5.7 Call of Duty: Zombies 1 and 2
5.8 Call of Duty: The War Collection
5.9 Call of Duty: Black Ops: Declassified
5.10 Call of Duty: Strike Team