Lurk
Happy Creepy Ass Cracka
I don't know. I've guessed that milk is one of the commodities that, unlike oil, really only has a limited range of distribution.
That the bulk of your business needs to be nearby. I have no idea, I just know it's true of some produce, like strawberries.
Spoils too quickly.
While stationed overseas we were exposed to irradiated milk in the commissary system. Milk sometimes kept for weeks after opening.