I'm a little confused about how the Rogue Trader dynasties fit into the structure of the Koronus Expanse (and the Calixis Sector).
From my reading, it seems that the Warrant of Trade grants a RT a license to operate warp-capable ships in the Expanse. Does that mean that there are no merchants or other non-RTs that are allowed to operate warp capable ships? If so that would imply every human ship in the Expanse either belongs to a RT or the Imperial Navy. If not, then what purpose is the Warrant?
Another question is how many ships does a Warrent let you have? It seems from my reading that a RT can simply pick up an additional warp capable ship and add it to his fleet. If so, why doesn't he just allow a large fleet of merchant ships to operate under his warrant and pick up a % of their profits? Wouldn't RTs be bombarded with requests from merchants to piggy back onto their warrant? This type of setup would seem to undermine the uniqueness of the Warrant and of RTs in general -- in fact a RT could sit back, do nothing and just let others do all work.
Finally, is the setup any different within the Imperium? Are there RTs there also?
Thanks in advance for helping me understand this better!

