Rushkoff and others think it's just a matter of time... I remain skeptical.
How many of the groups members have worked in telecommunications and understand how antennae work, how signal broadcasting and processing works, how OTA protocols are implemented, etc?
You can't build the kind of robustness that we enjoy today out of commodity hardware. If you want a decentralized darknet, you'll probably have to dust off that 56k modem and get used to using fidonet again.