All of that seems to be relative. I've been subscribed to a fixed wireless ISP here in northeastern California since it was offered in 2002 (Digitalpath). I've found it to be robust for more than ten years now (5 MB down and 1 MB up), the house is online 24/7 and there are no useage caps of any kind. This all came about because the telco had the DSL situation locked up (in their favor). Digitalpath overcame this by not using and phone lines or cable to get to their suscribers... they used the air instead. It has always been robust enough to use VoIP (telephone) over 24/7; both incomeing and outgoing.