Yeah I know it's not that difficult to ship overseas (I'm the living example, or aaeru it's most likely another example) but the way it is treated in Japan the "International selling" it's more like a world that companies and producers shouldn't touch at all costs. I have a friend in Japan, and he says that this regulations are more like a "Popular Rule" than a law, but it's supposed to be a Law against it, or so it seemed, stating about the "National culture or sub-culture", but I'm not that good informed about that.
But well, seeing it as an illegal affair it's probably better if you're Inside of the country and not Outside. Then again since overseas not all people have -/+50 $ ; -/+40€ to buy a game, (Some even cost more than 100 €... my First Press editions that I will always love XD) they end going for only playing the uploaded stuff and not supporting companies and producers, I think that way of acting has made the regulations about overseas sells that "extreme" if you want to put it that way.
P.S: I repeat myself, but shipping is good for them, so they're not THAT against overseas purchasing.