In a discussion about "Dual-Licensing Linux Kernel with GPL V2 and GPL V3" Linus is quite pessimistic about Sun's commitment to open source: "So they want to use Linux resources (_especially_ drivers), but they do *not* want to give anything back especially ZFS, which seems to be one of their very very few bright spots)."
Linus cynical about SUN: They steal Linux drivers, but won't give ZFS free.