A large scale mesh network is interesting to me for a couple of reasons:
* Consumers would no longer be dependent on monopolies like Comcast for internet service (OSI layer 1)
* It is much more resistant to eavesdropping and censorship (OSI layers 2-3)
These seem like two totally different problems to me, and I'm still struggling to understand how the physical layer part can work on a large scale.
I get how they could work on a small scale. For example, you could easily set up an ad-hoc wifi network in a college dorm for, say, file sharing purposes. But in most other settings, I don't get how it could work. Most people don't even talk to their neighbors, so even if you lived in a neighborhood that had a high enough density of nodes for this to work, why would you want to share a little ad-hoc network with your neighbors?
Of course, wireless networks alone aren't going to be sufficient to build a large-scale mesh network that could disrupt existing ISPs. The latency alone makes this infeasible. So you need someone to invest in physical links, especially physical links that cover long distances. That's why the BTC part of this proposal is so great -- it provides a way to compensate these people. Of course, this is just a slightly different problem than the one we have today, but instead of being stuck with Comcast we're stuck with whoever runs these physical links.