I don't agree with the idea that corporations are "people" in the first place, but since that does exist in the US, then the FBI being able to force Apple to ruin their own finances and reputation would be a legal precedent for fascism.
If this happens, the terrorists have already broken democracy, and they'll just use something else to plan their next attack so have lost nothing in return.
If this happens, the terrorists have already broken democracy, and they'll just use something else to plan their next attack so have lost nothing in return.