Yes. Cox has been doing it for years. They boast citywide hotspot access for all subscribers. I formerly thought that this hotspot network consisted of dedicated APs which they mount and maintain on utility poles in public places. But that’s just the start.

Every Cox customer has a Panoramic WiFi router that advertises as a member of the “CoxWiFi” SSID, and other customers can authenticate there and access the Internet through your connection. This is on a strictly opt-out basis.

I’ve opted-out, and also my router is permanently in Bridge Mode, so there is no technical way for me to provide anyone a WiFi connection. But all my neighbors do, even if they are blissfully unaware.

The best thing about fibre rollout in my region is that the ONT appears to act as the modem so I don't need to set the modem/router into bridge mode any more.

I'm sure that'll end.

Another reason to use your own Wifi router and modem