It's pretty logical that you can't build yourself such base, you don't have vault tec technology available !Anyway, bunkers last season were a waste of caps because of shitty spawn location, not to mention shitty efficiency (for the second point, you can live with it). Now it's even worse, because caps have greater value.Why dev made an awesome base map to make it spawn only at the worst location you can imagine for the most insane price you can imagine? Good question. I doubt they even know the answer themselves.
That's even funnier than before, it was a waste of caps, but at least you had access to a cool map. No you won't even have that!