Putting the great in immigration
Just a couple of things popped into my head on my walk home from the station:
Do foreign migrants have an easier time settling in an area than domestic migrants? I would say that going off purely anecdotal (and largely personal) evidence, the answer is yes. When I was living in the south of England, I would say that I felt like a fish out of water and that I felt like I shouldn't have felt that way. My then wife was already a fish out of water and settled in more successfully, in my opinion.
That said, because capital cities and/or larger metropolitan areas (such as Los Angeles, Toronto, Manchester) are melting pots where many cultures combine and many people are drawn to the capital from more provincial areas capital cities may act as immigration buffer zones, areas where culture shock and such doesn't really kick in. My friends in London, who aren't Londoners largely seem to like it there apart from the high prices. Nearly everybody finds Tokyo relatively comfortable apart from those who have moved from the similarly huge city/Kansai's regional de facto capital Osaka.
Or maybe I spend too much time thinking about things like this and not enough time studying Japanese or writing my novel.

