Since we're having this thread, may as well point out that the elements of Eastern philosophy and religion in Nordic culture shouldn't be overlooked.
I like this, though the reason might be complicated. The easy thing to say is to repeat that TES and its cultures are a bit, 'all things to all people'...
I will say something else, however (potentially tapping a hornet's nest, yet I hope people will note the impartial, unpartisan tone in which I am addressing this). What the real question in games like this, which I think is more applicable, is how they are inspired by authors who are, to whatever vague degree, preoccupied with current events. To start with, you have a global, imperialistic power that bans slavery appearing wholly dominant/stomping out brushfires in the 1990's (Daggerfall), seeing them struggle with that imperialistic tendency and get nearly kicked out/be kicked out of a few distant locations (Redguard/Morrowind), then struggle with a crisis or two which strains their resources to the breaking point (Oblivion), and finally see them on the descent during the ascent of rising powers with... questionable human rights records (+ rise of historically less prominent nations, ala Skyrim).
In other words, perhaps the best case to be made is that TES, like all forms of media, is used for cultural soul-searching. I think you can fill in the blanks from here, if you are so-inclined... further, I feel like I should add an MKish statement that anyone who uses my post as an excuse to engage in Monkey-talk will be hit with a hammer, this big. Yet, it is hard to read someone with as passionate of opinions as Kirkbride, and not make a real life connection here or there. This is all fit into individual experiences/opinions, and hence is a personalized, non-empirical process, as it is intended to be.