[live_to_code]

What's preventing the reverse engineering effort? Legality issues? Difficulty? Time? (I've heard stories about samba, and it seems like if MS protocols can be reverse engineered, then things that have to obey the laws of physics couldn't be that much worse).

[CamperBob]

I'm not sure. Probably the relatively obscure nature of the task and the manufacturers' relatively short design-life cycles discourage any sort of heroics.