This was definitely an interesting article, but they neglect all the Linux goodness out there, way more Linux servers than anything else, a Linux kernal powered phone has more than the iPhone or Windows phone, and the Linux Desktop is getting really slick. Unfortunately I can answer my own question in that Linux is not monetizing like Apple or Microsoft. And it is a really sad thing to because commercial software could be made for Linux but so often many people are against paying for software, which is not the idea behind Open Source, but rather the freedom to do what you want, like how I choose to pay for StarCraft II...I would love to play it on Linux and have no desire to tinker with it's source code.
Perhaps a study on how much money each operating system is making for the company using it would be a better measure of software quality, but this article was more based on investor interest...