The requirement to use facebook is not a legal one, but a social one defined by friends and family members who insist on using it (a.k.a. the networking effect).
In theory, governments can define and implement draconian checks on how collected data is processed by itself. People seem to trust that theoretical ability more than companies claiming to implement rigorous standards, but can do so without direct outside oversight or control. This is independent of whether it is actually true.
In theory, governments can define and implement draconian checks on how collected data is processed by itself. People seem to trust that theoretical ability more than companies claiming to implement rigorous standards, but can do so without direct outside oversight or control. This is independent of whether it is actually true.