Do you wonder why people who develop things like BCN or CN are staying in the shadows? It's not like it's not legal or something...
Maybe they are afraid of getting CIA'd since, clearly, they are smart. Plus not everyone is looking for a fame, even if it's a fame amongst small amount of people.
I think you must have special mindset for this kind of things - not everyone can develop something new. And probably this particular mindset is not looking for a fame.
Maybe but it's not like CIA is eating developers for breakfast/dinner/etc. they are paying salaries and not a small ones I imagine. So this is still a mystery for me. That's not a logic thing to do.