Mesh networks were the big buzz word (like "cloud") in the middle of last decade. Companies such as Belaire, Tropos, Skypilot, Motorolla (MeshNetworks), MeshDynamics, and others were fighting to provide city networks. Later, it was discovered that this did not work unless there was a bridge devices to move inside buildings (I believe this is where Ruckus go their start).
Once alot of companies and cities lost their shirts (Metrofi, Philidelphia, etc), it was determined that this technology is best suited for public safety. (I installed a citywide SkyPilot 4.9 GHz in 2006 which is still running and being used today). Problems come down to physics, though. In my case, the SkyPilot could do maybe 10-12 Mbps from the Gateway, and 2-4 Mbps from a one hop a way Extender, and 1-2 Mbps two hops away from and Extender, all the while increasing jitter and bandwidth instability (H.264/MPEG4 hates this). A total network had 20 Mbps capacity (802.11a) using a simplex single frequency design. PTZ cameras were sluggish and inconsistent. (Nowadays, SkyPilot is still in existence, as it was bought by Trilliant for smart meters).
With Fluidmesh and Firetide, newer modulations and schemes are developed to increase bandwidth, in addition to multiple frequency designs. I have to say that I have never used these, but the physics are the same. Minimal capacity on systems, when you consider HD cameras and their bandwidth/latency/jitter requirements. There may be several "backhaul" and "client" frequencies used, but the problem becomes "omni" antenna designs that can pick up every phone and other radio devices in the area (interference). These were fixxed by using directional antennas (but now, not a healing mesh). The other problem is self interference (when one mesh radio talks to another, but other mesh radios can also pickup the link). You can benefit by using 4.9 GHz (50 MHz band) to some degree, but this does not equal the capacity to do a very large scale deployment.
I have a customer who has a custom designed Fluidmesh system to connect 4 poles in a parking lot. Base radio on roof top with directional antenna to a "node". Directional antennas from there to the other 3 poles. All router radios, with antennas, are about $1500 each. I assume the base station radio is quite a bit more (with Skypilot it was $3500 base station, $1800 router radio, $550 client radio). This was with the minimal "bw" license. Directional antennas?? Really?? This does not seem to be self healing, which is how mesh is sold. $10,000+ worth of radios, when I figured I could do this with maybe $1000 PTP Ubiquit (nanostation, airgrid) or less with PTMP with better bandwidth and lower latency.
I am going to assume that networks (Firetide-Dallas??) ran into trouble when trying to use HD fixed and PTZ cameras (PTZ cameras without realtime control are frustrating and worthless). H.264 streams are efficienct, but they need a clean unrestricted path to work. I have found that the best way to use the SkyPilot 4.9 network nowadays is onboard SD storage (HD) and very low resolution RTSP streams back to central recording/management servers. PTZ preset control only. (As far as reliability, the (2) Gateway (12) Extender Skypilot system, with most radios at 60-120' on towers, has been working since 12/06. I think I have replaced one radio in 8 years due to a lightning strike - Amazing).