I have actually thought about a backstory for this, and if I wasn't a bit naff about putting even more additional stuff into OSE already (having spent perhaps 500 work hours into this this year alone
) I would perhaps put in the whole idea.
Outside the safe space lanes, in OSE there are the real pirates. Little fleets of really badass renegades, lurking in deep space and waiting for their big chance.
In the space lanes, there are traders of a different volume also. These bigShip NPC Commanders might harbour thousands of tons of cargo in their holds. (They won't really ingame naturally, as likely_cargo is maxxed out at 15 for reasons of RAM load, but let's suspend disbelieve here. A Dredger will have 2000+ tons of cargo onboard)
A pirate fleet that gets a Dredger with 2000t of Computers and sells it in an anarchy (who would seriously try to stop these guys?) has just earned themselves 200k Cr in one go.
Now the police and navy have such fleets too. Therefore, these uber pirates tend to stay in anarchies, feudal and dictatorship systems, and are very rare in others, and even in the former sort of system they tend to stay out of sight of the busy lanes except for a quick foray every now and then.
The super pirates distribution in my little background story here is about the one to be found in OSE, so that's really like that ingame.
What's not ingame, but we can assume it is like that (and I would put it in if it wasn't already a bit too much work for me anyways) is that sometimes, these uber pirates take a decision, move into the lane, and, leaving an apocalyptic trail of destruction in their wake, travel to the system's main station, where an epic battle between GalCop, perhaps emergency navy etc. and them will ensue.
Sometimes the good guys win, then nothing changes except paradise for scavengers for some time and big evening news for anyone not involved.
Sometimes the bad guys win, and then a democracy becomes an anarchy, or an anarchy becomes a feudal or dictatorship system - and guess who the new "lords" or dictators are, or, were ...
That's my ideas behind the whole concept in a nutshell
L