It seems like there should be a lot of potential for something like this in cities. The site says that line of sight and apartment buildings are problems but in the east coast cities I'm familiar with there's lots of neighborhoods consisting mainly of row homes or 2-3 story multifamily houses. To me places like neighborhoods like those would be a natural fit, more so than suburbs.

Also for me the main appeal of this is the potential for a not for profit, co-op style ISP. I.e. owned and operated by the customers. Although if the fiber is still coming from a Comcast or Verizon I'm not sure how different it would be vs. just buying consumer internet direct from Comcast/Verizon.