look they used the same tactics as in america against bitcoin... split in factions, create fundamentalism on both side that make the original vision a long gone history, play dirty trick on each side, inflitrate and of course suppress all intelligent and rational arguments.
The cypherpunks are a crafty bunch. There is simply no way that any entity can erect a firewall that filters all electromagnetic signals. The reason why is because there are an infinite number of possible frequencies and amplitudes you can try to circumvent the wall. Furthermore, if any malevolent entity just tries to co-opt the current chain, the cypherpunks can just go fork off. You can't stop an infinite amount of possibilities. It would just be an endless game of whack-a-mole. It's the same reason that the war on drugs just doesn't work. Governments and other powers that be are not omniscient, omnipotent beings. There will always be activities that will just slip under their radar.