Actually, the Zoners fear both the Outcasts and the Corsairs. Letting the Corsairs essentially police Omega 49 (NPCs) puts them in an even more favourable position.
From the rumours, some Corsairs are debating whether to attack Freeport 9 in the future and salvage the biodomes, and get rid of the bounty hunters.
Also from the rumours, the Zoners on Freeport 10 think that as soon as Freeport 10 loses its uses, they will be destroyed.
Also, artifacts in the cloud with the Omicron Gamma jump hole in it. Zoners say they dont touch them as they are Corsair property.
Those three show certain willingness from both sides of the war to attack the Zoners, and that the Zoners fear the Corsairs. I am sure that there are others that feature Zoners fearing Outcasts.
Its not as one sided as you claim, Drake. I do agree with your points, but as said earlier, lots of traders are flying with a Zoner tag and ID to gain immunity. At first, I let it go, but money is tight for people who pirate as it is. I can't afford to let 40% of the traders I see go past me. I admit, I have a debate of what to do everytime I see a Zoner trader. But Zoners certainly aren't immune.
From a purely RP point of view, you are correct Drake. But then, if we were pure RP, the location of the Omicron Gamma jump hole would be unknown to everyone but a Corsair or the odd Zoner (locate rumour, from the bartender on Freeport 9: He accidently tells Trent where the hole is and says 'Im a dead man'.