If there is one thing I’ve never like about HS, its the massively uninterrupted transport of material within it, and to/from it,
This is not specifically a security issue, or an aggression mechanic issue, its more an issue of the sheer volume of that cargo transit, and how simple/safe/cheap it is past numerous thresholds.
Proof positive of this, imo, is in the ridiculously low cargo contract prices, and of Jita as an eclipsing megalithic trade hub.
I dont believe these are a result of competition.
I believe they are a result of associated mechanics.