From what I recall, Samura| decided Osaka should blow up for oorp motives unknown. Inrp, the Keiretsu is supposed to have gained a lot of insurance money from it.
Now if you ask me, having a facility in Honshu system to serve as a base of operations for their Hogosha and Farmers Alliance thugs to harass their Kishiro and GMG friends was more beneficial than whatever amount of money Samura may have gained from their insurance contracts. Not to mention the storage part used to keep whatever goods were stolen from Gas Miner Guild and Kishiro by Samura thugs, before reselling them as legit goods.
So now, in order to do all this, Samura has to use Planet Honshu, and enjoy an increased scrutiny by State Police and Naval Forces... In a Republic where Kishiro Keiretsu has supposedly the upper hand. Bribing/Corruption costs must have skyrocketed.
Anyway Zelot, Kusari needs some life and both unlawful and lawful factions are in great need of people. Oh and there is those Imperials that desperately need some love.