The local criminal organisations don't like it when outsiders try to cut in on their business without paying their dues.
Has anyone seen the npc scoop anything yet?
Anarchy systems are far too easy. In the original Elite you had to be careful which systems you jumped into. Now it doesn't matter - you're pretty safe, even in the basic Sidewinder.
In Anarchy systems, the chances of interdiction should be much greater. You should be attacked by multiple ships (say, two or three) at a time. Anarchy systems should strike fear into the heart of greenhorns, and experienced players should take caution in those systems.