Not just a piracy problem - even when offered open source software people in developing countries will go for pirated software because it is 'worth something' - if the software is free (as in you don't have to pay a license for it) then there must be something wrong with it. They would much rather use free stolen software than free free software. Also, due to lower connectivity rates, memory sticks get passed around (music, movies) - I'm not sure about now, but a few years ago here in the Solomon Islands I used to get 100% success rate on finding malware on memory sticks I tested. Another factor is the cost of bandwidth - Solomon Islands, 7 cents US per megabyte is costly for most locals, so memory stick malware passing is still rife.