How on earth are you supposed to fulfill the "acquisition" missions for the main factions?
I've been running a few missions for sub-factions to gain enough influence to be offered a chance, and now the Imperial Navy are indeed offering me an "opportunity for advancement".
To complete their mission, I need to acquire a few tonnes of various particular commodities [ex. Combat Stabilizers, Personal Weapons, etc.] and suddenly all the systems that sold them a moment ago, no longer have them.
Even the stations that supposedly export those items suddenly are only buying them!
So after a couple of hours of system hopping and totally failing to find anywhere selling these items, I'm forced to give up the mission, losing me influence instead of gaining it... I'm tearing my hair out here!
So, what am I doing wrong? Is the mission meant to be an invitation to piracy rather than trading? Do I need to buy a cargo scanner and hang out at the nearest Anarchy?