Singularity OS
Microsoft already had it running in the labs, but decided not to offer it as a product. It could have threatened their millions-of-lines-of-C++-code hairball WNT.
https://www.microsoft.com/en-us/research/project/singularity/?from=http%3A%2F%2Fresearch.microsoft.com%2Fen-us%2Fprojects%2Fsingularity
Biting the hand that feeds IT
