The point of sale of pbooks is legally the vendor's country. But the point of sale of digital goods (=ebooks) is the buyer's country.
When you buy a US-pbook at Amazon US, you legally buy it in the US and then have it shipped to you. That's fine. But when you buy a book at the Amazon Kindle store from outside the US, it is bought in "outside the US". That's bad.
All geographical restrictions could be yesterday's news, if they could change just this tiny little thing.
