>Open source, I see as largely copying the features they want from closed source, not attempting to innovate new features.
...
>It has to be sustained to keep on pace with the proprietary software, otherwise it becomes out of date and useless.

Right, thats exactly my point. And when MS decides that its top priority is security and reliability instead of innovating features, the gap closes.

>I dont have anything against the principle of OpenSource, I just dont find it commercially viable.

I agree.