I fail to see how this model would account for hardware obsolescence. Would the PC have to be taken back to a supplier-authorized service center to get a better video card and/or more physical memory? This would be a pain for some users, especially serious gamers who continually strive for the best video performance for the newest games.
That, and what about all those Windows Updates? Does a reboot required by a MS-originated security patch have a cost?
I echo BornAgainMac's sentiments. No thanks.