The reason why all the smuggling goes to Liberty is because all of the contraband comes from the outer regions. Freelances economy runs on the simple notion that the highest buying will be located in the system furthest from the supplier. To have something valuable going to Rhienland, it would need to origanate in either Dublin or Edinburough.
Trust me even one tiny fraction of an imbalance can be found and exploited. If you havent heard about it ask some of the other players about Harris - McDuff. When dealing with commodities you have no room for error.
In addition people have expectations towards commodities. You could make an item that is supplied by only one base and purchased by only 5 others no problem, but that could (more like would) lead to someone asking why no where else buys that item.
