The US tried to do this with the RSA cryptosystem, which was at one time
patented by Public Key Partners, who made no software and issued no
licenses. That effort failed, but they are still trying to supress it
with ITAR, preventing export. That too will fail, miserably, despite
support from Congress and the White House, because international
competition won't allow us the luxury of not using something as important
economically as public key encryption. They'll try their damnedest, and
may keep it down for a short time, but eventually they will fail. You
just can't stop the momentum of economically important discoveries.