Conclusions on issues

Building an expensive network on 802.11 can be risky as you have no rights or priorities.
Coordinate with other users.
A properly designed network will survive longer.
Other issues can affect you like FCC Rules changes or pressure to get the FCC to enforce. Be active in watching and changing the FCC's Rules!

Building an expensive network on 802.11 can be risky as you have no rights or priorities.