Personally, I wonder how long it takes before redmond realizes that they are wasting shareholder money by maintaining/developing a proprietary kernel. It's not like they could not sell windows/linux as a perfectly good OS with copyrighted components on top of the kernel.
I would think "non existent" would be even more fair assessment of my exposure to NT internals.
Which is exactly why I asked some kind of source for the question why NT is so much more advantaged than bsd or linux kernels.
And if someone has somewhere written some analysis why it would be impossible/difficult/easy to swap windows kernel to unix, I would be curious to read.