I don't mean to have an endless discussion about this, but I'm compelled to ask what do you mean by "it, and its developers, are doing very well as a non-profit"? Are you saying they are earning a healthy income, or do you mean, as I already agreed, that the application is popular?

According to http://www.blender.org/foundation/development-fund/, they are currently collecting donations at a rate of 4225 Euros per month. (* excluding main sponsors, whatever that means) I wouldn't get out of bed for that money, and I'm just one person. They are 4.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)