Torrents handle most people leaching if at least a handful of people are seeding. Westerners with fat upload pipes can support everybody else.
At a bit less than 5GB, this is the perfect candidate for a torrent. Small enough to reasonably seed to a high ratio, while so large that it apparently puts me over mega's transfer quota for my IP..
I'm not sure about upload specifically, but recent lists of countries sorted by average download speed puts a lot of non-Western countries (in the sense of lack of European influence, etc.) near the top of the list.
But your point stands that the large pipes, wherever they are, can support the RoW.