A drone costs more than a helicopter. The FAA has ensured that the price isn't going to fall too far since their avionics has to be DO-178B class A rated. I.E. the same rating that passenger aircraft need to get.
Your comment is very interesting to me since the FAA has not yet publicly announced the rules for integrating UAS into the national airspace. Whats your source that DO-178B compliance is required?
So long as there's significant penalty to participating as a seller in this market for those actually writing the software then I don't see why it can't be public. I don't think it would be a good idea to allow without penalty someone who is writing the software to be cashing in on million+ dollar bonuses for back doors he writes himself however. That seems analogous to insider trading.
Forfeiture of all money gained as such and a stiff jail sentence should be enough to discourage any but those who are already doing this without public knowledge of the market.
That's _expensive_