I was vaguely aware of the open source activity going on in Latin America, but I lacked the big picture. Matt Asay points to this feature, which provides a nice overview of the situation, country by country. It concludes:
In South American countries, as in most other areas of the world, the government is by far the biggest purchaser of software. Thus the Open Source trend that is now established in the government sector across the continent will doubtless spur Open Source adoption in the private sector.
There are a variety of motives for Open Source adoption in play in there, from the reduction in software costs to the desire to provide a "leg-up" to the local software industry. However, the motivation of the Peruvian government is unique in that the Peruvian supporters of the bill see "Open Source" as a citizen's right. The ownership and responsibility for the use of data and software have become a political issue in Peru.
This is an idea that is unlikely to go away.