[jedberg]

Unlikely. The Apple kernel guys are purists and would probably use the BSD kernel even if Linux were MIT licensed.

[asveikau]

In the 90s they had a project called MkLinux that had Linux combined with Mach in a similar position to where BSD is in XNU. This was shortly after the NeXT acquisition.

I bet they were considering it.

https://en.wikipedia.org/wiki/MkLinux