I'd dispute that completely. All innovations humans have created have trended towards zero cost to produce. The cost for many things (such as bioweapons, encryption, etc) has become exponentially cheaper to produce over time.
To tightly control access, one would then need exponentially more control of resources, monitoring & in turn reduction of liberty.
To put it into perspective encryption was once (still might be) considered an "arm", so they attempted to regulate its export.
Try to regulate small arms (AR-15, etc) today and you'll end up getting kits where you can build your own for <$500. If you go after the kits, people will make 3D printed fire arms. Go after the 3D manufacturers and you'll end up with torrents where I can download an arsenal of designs (where we are today). So where are we at now? We're monitoring everyones communication, going through peoples mail, and still it's not stopping anything.
That's how technology works -- progress is inevitable, you cannot regulate information.