Of course returning is the right thing to do.
But it would have been even more rightful if these huge companies would thank for such nice gestures.

They are usually ('usually', not 'sometimes', 'usually') so bad with people and so bad in cheating on us... that I really feel I should give back to them some cheating.

I would probably feel bad (of course: cheating IS bad). But when I go read the small prints... ahh.. you might change your mind