On this topic, phone lines are so ubiquitous that it is irresponsible for representative governments to continue to let private companies mess around with them. Doubly irresponsible to go from public to private after the increase in popularity.
That was in the 2000s. Phone lines are an anomaly now but cellphones are not. The phone number is more like an ICQ number than an identifier of a physical connection, but is still regulated like the latter.