Firstly, it's not true that cyberpunk themes are not being explored in the Federal context, there are for instance bounty hunters, self-acclaimed police forces and many others who are doing interesting role-playing out there.
I see the Gallente PF pretty much the same way as Lallara. It's all about corruption, manipulation, secret deals and misdirection. One aspect of how Caldari State's cyberpunk/capitalism might differ from that of the Federation, is how much things seem to be out of control. For me the State feels the ultimate pinnacle of state monopoly, perhaps with flavors from Half-life 2, 1984 or Gattaca/In Time. I tend to associate works like Deus ex, Brave New World or Blade Runner more strongly with the Federation.
Besides player preferences, there are practical considerations that drive people away from darker themes. When you start a new character or project, you are literally easy to shoot down and the community will ignore you because you are most likely doing something 'wrong' and it is not clear whether you will be worth of anyone's time. Easiest way to get rid of these obstacles is to be nice, amusing and stand for nothing. I don't think there's much that can be done to address this issue, it's just the way it works.