i guess nowadays it is a beneficial symbiotic relationship. - the GMG as a stable force in the borderworlds but iwth a good footing in the houses deals in raw materials and recently in establishing a presense in okinawa.
the zoners are a siriuswide group of multiconnected individuals and stations, organized strongly locally but also interconnected via a siriuswide network. - in short - a perfect community to spread commodities and to forge deals and friendship.
the zoners on the other hand have the benefit of unmatched deals for their trade - and the opportunity to be sole providers of much needed materials in the borderworlds as well as the edgeworlds.
the way i see it - there is no emotional friendship or something - but a solid logical business partnership. - both factions know exactly how much they benefit from one another - both know that the other faction is a perfect match for them.
even in terms of ideology - they are at least not opposing each other. - the GMG being a strong community or group that even opposed a house in their past - the zoners a group that left the core and grew powerful against all odds.