Massive boss David Polfeldt said that to cater to all tastes for The Division, you have to create a ‘monster’ game and it is a challenge for other games in the same genre.
Meanwhile, Massive doubled its size from The Division 1 to The Division 2, and they have their own culture separate from other Ubisoft studios.
Source: N4G PC Massive MD on The Division: You Have to Create a Monster Game to Cater to All, Other Games Struggle