This is an interesting argument. I'm aware of it but wasn't aware that the other person was referring to it in his post. I certainly think it would be interest

This is an interesting argument. I'm aware of it but wasn't aware that the other person was referring to it in his post. I certainly think it would be interesting to have the FCC allocate a band that could be used in a less regulated way such as you describe. It's a very interesting area of SDR and game theory and I've actually put a bit of thought into how such an ecosystem might work after hearing a talk about the DARPA Spectrum Challenge. So I don't disagree with your point at all, and think that the FCC should allocate some spectrum to this sort of deregulated scenario. Perhaps if it also required that all protocol and modulation approaches be open sourced that would help participants to coordinate usefully. I think that we are far from the limits of physics across most of the network, but there are likely some congestion patterns in dense areas that create complex intermod scenarios that would make a system like this somewhat brittle until the ecosystem evolved to find a cooperative equilibrium of some sort. In addition to MIMO, I'm interested in things like using TDM and awareness of harmonic and intermod characteristics to create various emergent latency "contracts" that correlated with different frequency ranges and time slices, so that participants that did not need low latency could create significantly less interference than they otherwise would, and participants could cooperate based on the data rate and latency requirements of other nearby nodes.