That analogy doesn't work though.... someone using a 2nd hand rubber johnny is intrinsically deprived from using part of the product, e.g. the spermicidal lubricant will be missing, the shape of the prophylactic will be permanently affected, there will be a "deposit" left behind as a result of the contraceptive having been used (unless the first user is interrupted mid-flow or has some medical condition), etc...Besides, you wouldn't give someone a condom for Xmas and use it first would you?
Playing a games console, however, leaves the product in virtually the same state it was in prior to having been used. As he took care to not damage the sticker and assuming his 360 didn't eat the disc, then it's probable that the kid won't even be aware that he's using 2nd hand goods.
Just my 2 cents.