The internet is too big, to flexible,
and too much of moving target. No government will ever be able to
effectively
control it.
Even before that, in Poland, messages were put on floppy disks then
erased. In DOS an erased file is not erased but the first letter in the
file is changed to a ? and the disk space is returned to the pool of
available space. It is easy to unerase. Party officials had no idea how
computers worked so all they saw was a blank disk.