At this point, Linux is so integral to Microsoft's strategy that if anything, it's more likely that Microsoft would abandon the Windows kernel and rebuild the W

At this point, Linux is so integral to Microsoft's strategy that if anything, it's more likely that Microsoft would abandon the Windows kernel and rebuild the Windows UI on top of Linux. (To be clear, that's not going to happen, but it's also no longer at the "hell would freeze over" level of absurdity for Nadella's Microsoft.)