Look, you want people to get involved? Then it needs to be safe to do so. Recent history has demonstrated that whistleblowers have no such assurance. They risk damage to their reputation and future employment prospects; some even end up forced out their career of choice. This is how we reward them, and you expect people to just step up and fall on those swords?
Other commenters have pointed out that our justice system also lacks any means to determine how a particular case will play out. Personally, I would do everything in my power to avoid entanglement with the government, in any way shape or form. I am literally terrified of going to court for any reason, because Truth and Justice no longer have any place there; no, the Law sucks all the oxygen out of the room. If you think otherwise, then I would wager that you have never been through that system.