Death by baby monitor.
WiFi @ 2.4GHz always had troubles with other non WiFi stuff from the local pound shop. A cheapy wireless security camera system in a tiny cafe once caused havoc over the whole Brighton Beach free wifi.
Fortunately the cafe owner preferred free internet to security and binned it.
There's all sorts of crap in that band already, moving to the Northern Territory Pop 230k, size 1,4M square km, where all the buildings are corrugated tin Faraday cages has alleviated the problem.
In normal cities who'd want to operate in that band? There's so many microwaves flying around already you can re-heat lasagna!