A Tale of Two Graphs
This is restating a point I've made elsewhere: that the graph of hardware requirements for Windows keeps on rising, while that for GNU/Linux is practically flat:What all this means is that Windows is becoming more and more resource reliant while Linux essentially maintains its requirements. Microsoft is already seeing the effects of their sloppiness in bad reviews of Vista and having to extend XP’s life, but unless they change soon, they will see it even more, and pay for it too.
In the future, it seems likely that a computer with Windows will cost far more than a computer with Linux, not because of the price of the operating system (since hardware manufacturers are constantly pretending Windows is free, when in reality it is not) but because the hardware required to run Windows is so much more expensive than the hardware required to run Linux.
It's why I think the ultaportable sector is so important: it exposes this trend most brutally.