[bydo]

Many SSDs are built with extra, inaccessible, capacity, for wear leveling purposes (of course, I don't know of any SSD manufacturers selling unlock codes for the extra storage). Lithium ion batteries similarly degrade with use. Perhaps an unlocked S60's battery will age better, which would be better for buyers in the long run. Tesla also sells preowned cars, so if extra capacity helps with wear, this would also help on that front (and introduce the possibility of selling the unlock twice?).