Elite Missions Questions

I read all about the "problems" with Elite Missions and only one Alliance controlling access. My question is How does an alliance get control of a town, who do they talk to? Cause it seems like each town, on the Luxon side anyways, is run by a different alliance. So does having control over any town give your alliance access? If this is so then more than one alliance has access because of all the different towns and outpost that are out there. I saw a town yesterday deep into Luxon territory near the Whirlpool that was not controlled by any alliance at all. If my guild took control of it would that give us access to the Elite mission?

If anyone can explain exactly how all this works I would appreciate it
Thanks.

I believe that to access the elite missions you have to control one of the capitals, either Cavalon or House Zu Heltzer.

ok.
So what is the benefit for holding and outpost or other town?

nothing.

So why waste faction on owning an outpost? I see that there are gated off areas in a town/outpost with a merchant or something behind the fence and the Gatekeeper tells you that only alliance members are allowed in. does the merchant have good stuff to sell or something?