There's something critically lacking in the Star Wars universe. Ask yourself this: why did they have to drag a droid halfway across the galaxy, under fire, to deliver the plans it contained?
If only there were some way to transmit information without needing to physically transfer a container. Something like mail, only completely electronic. "E-mail", if you will. What a great invention that would be.
That's right: the entire plot of Star Wars assumes that the galaxy relies on sneakernet.