Re: No right to conceal information
The Constitution protects against unreasonable search and this is certainly not unreasonable.
But the Constitution failed to be applied for many years (see Snowden). US spooks and law enforcement trampled all over both the Constitution and international human rights. The people will not grant them anything near those powers again for at least a generation.
If you (FBI & CEO) can't do the time (without intrusive powers), don't do the crime (violating the Constitution and international law). Come back when you can demonstrate some trust.
A good first step would be shutting up about the fake "going dark": they have much, much, much more data than a few years ago, including enough electronic capability to put a continuous automatic "tail" on every person at least as good as the tails that used to require teams of people just for one target. What would the founding fathers say about a police force that can track everyone in the whole country all the time?