[rahimnathwani]

For those who didn't click the link, the classic example of price discrimination is movie tickets. There is one price for adults, and another for children, even though the costs to the cinema are the same either way.

Yes, the ability to separate markets and thereby price discriminate will increase producer profits. Yes, this will sometimes make otherwise unviable products viable. However, this is not always the case. In the case of textbooks, I would suspect that, if producers could not discriminate, they would price at roughly the 'Western' price, and people in low income countries would be unable to afford a licensed copy of these books. Perhaps we would save a small percentage, but not much.