Really Annoying
"How come the Corsairs dont take over house territories seeing as they have superior technology and pilots?"
Well look at it this way if they did attempt to conquer a house territory not only would they have to take on the house navy, military and police but also the house corporations and criminals (i.e the mollys and the gaians might be against their government buy they arent gonna stand and watch as foreigners take over their territory) and also the Corsair population is no where close to any of the house factions, thus they would be outnumbered 100+-1. And they would have to go up against capitol ships.
Corsairs news indicates theyre moving forces close to Rheinland to attempt an invasion, Rheinland might only have one battleship but IMO its safe becasue of Red Hessians with Sabres and the Rheinland HF is no piece of cake either.
Also one of the rumors on Tripoli shipyard is that the corsairs have pilots to spare but Tripoli is working at full capacity to meet demand for ships. So they couldnt match the industrial might of any house territory.
Some people might feel thier Titans is superior in SP and can take on 10-15 ships at a time thus making it seem easy but thats because your shield regenerates and you have the experimental weopons, nanobots and shield batteries, if not for these things the titan is balanced with other ships.
Taking all this into account the Corsairs current strategy of pirating and gureilla warfare makes perfect sense to me.