I think people forget an important point...
Talon Company is across the country.
I dont completely buy that, Fallout 3's attroctious writing may have put their base in DC, but think about it, a well-equipped mercenary group with almost no restrictions on contracts, add into the fact that this is the wasteland, i'd imagine such a group to grow into large presence and perhaps even send divisions off to access new markets.
I put this in the Fallout 4 suggestion topic in Series Discussion, this shows why i think they are fit to spread out and why i like them so much:
I would like Talon Company to be in Fallout 4, but not like they were in Fallout 3, I want it to be like the factions of New Vegas, with interaction and reputation. My logic is that, in a post-nuclear world like Fallout, an entity like the Talon Company would flourish into tremendous presence, even more so in areas where no large factions had developed to create order. I mean, the Talon Company is a perfect example of the perfect post-apocolyptic business model, a moderatly sized, well-equiped paramilitary force that would be deployed at the word and monetary expense of wealthy people or groups to vy for power. I dont understand how there are no other factions like them, the Talon Company should be in Fallout 4, it fits well in the setting and, frankly, the poor usage of a faction with such potential in Fallout 3 left a bad taste in my mouth, and, seeing how very well Obsidian did with factions in Fallout: New Vegas, really fleshing them out with backgrounds and interactions, I have no doubt that, if Bethesda takes some pointers from New Vegas's handling of factions, they could be a great faction in Fallout 4.
Talon Company!