I'd like to see your source for those statistics, but I'll accept them as valid. At the two year mark, I bet most of those Window's PCs either had a RAM, hard drive, or power supply failure. Those are easily fixed with a screwdriver and a replacement part. Those 20% of the Apples that failed at the 2 year mark? They may as well be bricks since they are 1 year out of warranty and sealed like Fort Knox.