Its easier to fill an empty room, that to fit more into a full room. Consoles aren't advancing faster than PC's, they are just using technologies that already exist in PC's. The same thing is happenign with GPU's, everyone is having orgasms claiming that they are exceedign moores law blah blah whatever. Its easy to double the speed of a 400 MHz core to 800 MHZ when 800 Mhz was done 5 years before, its far harder to actually push the envelope. So consoles are now using hard drivees, big deal, PC's have been doing that for 20 years.