One of the sticking point of Linux is that in the industry, it is yet to be fully seen as a mature platform, ready for real world implementations. The perception of Linux is still mind-warped to the early 90s, which tends to label Linux as a hobbyist OS.
Fact 1: Linux is very much ready for real world tasks. Fact 2: It is already adopted as a core business and/or operational platform by many organisations. Fact 3: Linux is severely undermarketed and its uptake by organisations tend to be mostly for tech-intensive duties where nobody outside of the technology diaspora can take notice.
Thanks to OSNews for the linkage.