Umm... Hullo? Sorry to interrupt, but what makes you say merc's wouldn't have the money to buy such a ship? Honestly, if a military hires me to fly into a terrorist system and do fleet-battle, I'm going to be wanting more than 5 mill.
Let's think realistically, in life, all those guns for hire take jobs for like... 400K... Ish... Maybe more. Woohoo, let's guard a caravan of Nomad Indonesian gypsies... If the employer is willing to pay us that much, then I'll guard them. Even if they only get paid 50K, that's enough to buy quite a bit. Sure, this is all based off of movies, shows, and the like... If any of you are mercs in RL, please correct me. But I'm not quite sure any of you are.
If a group wants me to put a bullet through a terrorist's head, or rig a car to explode to make it look like an accident; I'll do it. Come on, 400K in real life is enough to buy any gun, any car, any anything other than a huge mansion... Maybe four more caravans and I can have an episode of 'Cribs'. So why, with all the beautiful inflation and all that wazu yumminess, isn't a merc allowed to; or can't afford a BS?
I think the Corsairs and silly people are tired of making the wrong people mad and getting killed by people who drop out of cruise, fire on them and say, "Bill sends his regards! BWAH! BWAH HA! *zoom away*"
Thirty-six dead people later, I can afford a Brettonian battleship... Yatai? Indoubadably.
On topic! Mercs do anything... They'll lick somebody clean if they pay enough. Bounty Hunters pretend to be cool, get slaughtered by the Order, and are very limited by their ID and faction.