This is not how shipping works.
A larger box, even by 1 inch on any direction, absolutely makes a huge difference when shipping in manufacturing quantities. Let's not pretend physical volume doesn't exist just to make an argument.
10 planes flying with MacBooks == much different than 1 plane (in other words, when you 10x the size of something, as you suggest, it does actually have a huge impact)
A smaller box allows more to be carried. But if we go that route, it's trivial to ship them without any box and box them domestically - and that's a 2-3x volume reduction right there.
Ah yeah I can't imagine any scenario where this could go wrong
Like man in the middle attacks
Replacement/fake products
... or you know, damage? Boxes provide... protection.
> it's trivial
Anytime you catch yourself thinking something is trivial, you're probably trivializing it (aka think about it more and you'll probably be able to think of a dozen more reasons packaging products is the norm)