It doesn't work this way. There are lots of people in this who can easily afford an Apple product. There are roughly 600Mn smartphone users in the country, which is increasing at a rate of 25Mn new users per quarter. Out of those 600Mn, around 18Mn are iOS users. That's almost half of Canada's population or 2x Serbia's population.
Companies follow data, and if they can get a decent number from a country, they invest resources there. It's simple math.