I think it's the curse of windows being attached to a tech company, and a tech company seems to want to keep pursuing cool things™ instead of boring maintenance on a utility. Over the years lots of little extra non-essential functionality has crept into windows to where you could almost compare it with a lightweight linux distro, or that it's hard to draw the line where the OS ends, and then you're getting into territory where everyone relies upon a different subset of what's available which MS has been increasingly able to use to justify adding more 'essential' features for modern computing.