Maybe not Intel but Apple?
Someone who signed the nVidia-Linux drivers petition made an interesting comment:
"upcoming Powerbook 1GHz 12'. NVidia should introduce the linux on PowerPC hardware platform. Unified nvidia driver for ppc shoud'nt be hard work to compile. Only the coming annoucement of ppc nvidia support is worth the value. Otherwise, there is an undisclosed contract between Apple and Nvidia to never provide nvidia ppc binaries to linux community"
Do you think nVidia and Apple would really engage in such a business practice though? Hard to be sure considering...