Even though I'm a fanboi, I don't see it happening or "sticking": http://www.zdnet.com/blog/open-source/20-million-new-ubuntu-linux-pcs-in-2012/10770 Some years ago, some branded PCs were shipping with Linux (I don't remember which distro) and the seller's job was to just overwrite with pirated Windows. This was in India. I understand that similar things go on in Brazil.
One comment there mentions as an example that Brazil has deployed >500,000 Linux computers for their schools in 2008-2010. True - but the funny thing is that this rollout is based on Kubuntu! Now, what Ubuntu flavour Canonical isn't going to sponsor anymore? Ahhh - right: It's Kubuntu
Hmm... the way I read it, "including the world's largest, a 500,000 seat deployment in Brazil." indicates the seats in the schools, not the number of Linux computers. Also of note is this sad part a little later on: "Yet despite those mandates, he said, Microsoft Windows often ends up ultimately getting deployed instead. There are many reasons why, including lobbying efforts, entrenched players, politics, and money. But the troubling part is that the open source community has no response to these gambits, even when they are based entirely on FUD and distortion." And evidence of such activity is not hard to find all around us. Also, it appears MS isn't totally aware of everything! In a comment here, Effenberg0x0 remarked about the efforts of testers who report over at ubuntuforums.org. MS' response indicated that he wasn't aware of that.