@Timmy IMG is in quite funny situation, since Gallia knows that IMG trades with everyone, but they are also semi-dependant on IMG, as it comes for resources (otherwise, GMS or IDF would get all IMG bases in Taus). That's why, I believe, Gallia uses Kusari as a trade proxy with Liberty and Bretonia. But that's my thought.
Also, good point. But again: original Freelancer Houses were not supposed to wage war against each other. Liberty's biggest backbone is the fact they are dependant on resources from other houses, as they have no ores to offer (according to the original lore).
