You're fault for you/yourfriends/family or buying it that way.
What are you? Stupid? This is a known problem with the Xbox 360.OT.PS3 uses Blue ray. Blue ray disks have an extra protection cover to keep it from scratching. That's why I have never had a problem with a scratched game on PS3
This is why I have a PC[img]http://www.deviantart.com/download/123190068/PC_Gaming_Master_Race_by_Claidheam_Righ.jpg[/im g]