This is simply another manifestation of a worldwide phenomenon.
Less magazines need printing. Very few donate to cover the literature taken anyway.
It is that simple. So the "printing branches" can be fewer and farther between. I mean a cheap tablet that can take jwonline library and be rolled out to the masses is now £100.
Think about Australia's geographical position. Who is going to take literature and donate for it? Little old jw ladies in Oz and NZ and that's it.
Indonesia is Muslim and poor, Philippines is poor and ripe for tablets over hard copy (and close enough to Japan). South East Asia make all the tablets anyway!
All they need now is a printing branch per continent.
My money is eventually on:
USA/CANADA for North America
MEXICO for everything south including South America (Maybe Brazil for a while?)
GERMANY for Europe, North Africa and the Middle East
JAPAN for Asia (India, China, Indo-China and the Pacific
SOUTH AFRICA for Africa below the Sahara