To write a wiki with 100K articles, you don't need the 480M speakers of Hindi, the 46M speakers of Polish or the 4.6M speakers of Norwegian. All you need is 20 or 50 very determined people, who really want to write a wiki with 100K articles. This determination is a mindset, which can be very hard to reach. Have you tried to convince your parents to contribute actively to Wikipedia? I suppose that pyramid schemes, religious cults, and even suicide bombings need a similar mindset. Most people just wouldn't get it into their head, that this is a good idea. But once you are determined, the actual job is not so hard to do.
Perhaps we have an understanding of ideas, ideologies, and mindsets today that is similar to the medical understanding of viruses and bacteria 200 years ago.
LOL Count this as signed by me, too :) It's an absolutely EXACT picture :) Bèrto