Well I can tell you what has happened in our experience. For about five years we had National Geographic sent directly to us here in Peru. (Ordered from NG and mailed directly by them.) The international subscription rate was fairly expensive but we enjoyed it. They always arrived in a timely manner. Well, after about five years they stopped coming. We called and called. NG continued to add months to our subscription but they would never show up. We finallly gave up. At one point we were getting National Geographic Kids here with no problem as well.
We also got Readers Digest for a couple of years before they stopped coming. We never had luck getting any other magazines. I think a lot of people here want to learn English. I always wondered if they were simply stolen en route. Looking at the prices at the bookstores, those magazines are pretty valuable.
Now we just have relatives bring down magazines when they come. Sure they are outdated but still enjoyable.