I just thought of Killzone...

As I can see, most (if not ALL) Killzone fans sympathize Helghast MUCH more than ISA. Of course, they would. Helghast wear gas masks, longcoats, and have militaristic-totalitarian society. What else can war-addict-military-fetishist dream of?
But that's not the matter.
Creators of Killzone are, of course, aware of this. Then, why they keep making ISA protagonists? I mean, if they would put us in a proud son of Helghan body, even for one issue, Killzone fandom would just squeal of happiness, and, of course, would give some major commercial feedback...