remember back in the days of nt 3.5 and 4.0. it would boot on almost all the major commercial platforms of the day. alpha, sparc, mips, ppc, and x86.
now os x is going to run on ppc and x86. the next step would be getting it to boot on everything else and opensourcing cocao and aqua. sun has given us open office, and opensolaris. from what ive seen solaris on x86 is gaining some popularity. all we have from apple is opendarwin. sgi gave linux several things, like the xfs filesystem, the ability to boot 512 goddamn procs in a single system image. all of which you can read to figure out how in the hell they did it. apple i think should give us display pdf