The thing most bothering me right now is the lack of meaningful response from the companies that really matter: Google, Microsoft, Apple, and others. The responses we do have seem to be downright lies.
These sorts of things are gag-ordered. It may be that the top brass doesn't even know, for plausible deniability's sake, or that they've been told and now immediately face federal felony charges if they tell anyone (spouses and PR flacks included).
There was a fight (which was won) to get the gag-order provisions of PATRIOT NSLs lifted, at least for speaking to one's own lawyer, which is a protected right (spouses and coworkers are still out, tho). Who knows if those rights extend to FISA orders, though we've seen how they interpret other constitutionally protected rights.
It's not their fault that they don't want jail time. Blame your government. Support courageous people like Snowden. Tell your friends.