I found that the sale (placement) of books and magazines was always a challenge, but it was still attainable.
Remember when every so often they actually required us to go to the door and ask people if they wanted a "yearly subscription" of the Watchtower and Awake. It was bad enough that those of us in the religion had to read them and hash over them at the meetings but I couldn't imagine why anyone outside the religion would want to read them let alone have a yearly subscription, especially considering all of the JW only topics.
Looking back it shows me how fanatical, delusional and narcissistic the leaders of the religion were. I think today's group is embarrassed by their past.