To break this down to it's basics. We will have some amazingly good looking PC's in over the next 2 years.
Maybe the hardware will be worth the money which we pay for it,
Another point - We have not seen the end of the PowerPC. The Xbox 360 uses the processor. Not only that but maybe Jobs saw this as a move, by Microsoft, to move silently into Mac territory. Jobs is simply fighting back by unleasing and unbinding his OS to the hardware.