> I often wonder why Microsoft doesn't just bite the bullet and adopt Linux as the kernel for Windows. What does the Linux kernel offer them to merit the pain

> I often wonder why Microsoft doesn't just bite the bullet and adopt Linux as the kernel for Windows. What does the Linux kernel offer them to merit the pain of doing that? Also, why the Linux kernel in specific instead of adopting any of the other kernels intended to provide a UNIX environment such as XNU, FreeBSD's kernel, Illumos' kernel, etcetera? They have the technology to switch in the form of drawbridge. Whether they have sufficient incentive to do that or that one option is more desireable than another is another story.