We did it occasionally, as I recall, back in the 70's, maybe early 80's.
It was usually when there was a Kingdom Ministry article about doing it that there would be some impetus and the Territory Servant would draw up some maps and give them to the pioneers.
From what I remember, it seemed to fizzle out very quickly. However, I do recall that those who did it said they placed more magazines that way (obviously owners or managers did not want to piss off potential customers).
I remember a couple of CO's mentioned doing business territory but it was never that big of a deal in our area.
Rub a Dub