Linux Can’t Kill Windows
You can quit proclaiming Linux the Windows killer. Linux is established and has a niche that, as various pendulums swing, will grow and shrink. Show me charts and stats and benchmarks that prove Linux superior to Windows in every measure and I'll not argue with you. But no matter how much money and dedication is poured into Linux, it will never put a dent in Windows' mind share or market share because Linux is an operating system, a way -- and probably the best way -- to make system hardware do what it's told. But you can't turn Linux into a platform even if you brand it, box it, and put a pricey sticker on it.
Businesses and organizations of all sizes need consistent, predictable, scalable, self-contained platforms for server solutions. Windows wins. Linux doesn't lose, because it can continue the legacy of another nonplatform, namely Unix, that needs to be refreshed and extended.