In the city of Groningen (pop. 200.000) in The Netherlands the cable company has split each wifi access point of almost all subscribers into two different wifi access points. The subscriber uses one frequency, the other can be used by all subscribers in the country, using their own username and password. It works very well, even if you walk or cycle on the street, your smartphone or tablet will keep the connection as you move from one subscriber to the next.
The phone company meanwhile is busy upgrading most of the country to glass fibre.