How many years until General Direct Dialed telephony dies?

Discuss.

As I'd posted this poll a week or so back, general direct-dialed telephony, a/k/a PSTN (public switched telephone networks) seem to be in trouble. I think we could be within five years of their total collapse. And no, not just land lines (already about 25% of their peak in much of the US), but _all_ direct-dialed phones: mobile and VOIP included.

The problem, as I'd written before, is paradoxically the _low_ cost of calls. This is inducing tremendous volumes of junk calls, with one ...

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... services followed a similar route. Courier services were a private offering until an upstart maverick came up with the insane notion of a *government run* messaging service. Must've been some a-rab: bin Yamin something or other. (history.com/this-day-in-histor)

And of course, high-value carve outs for overnight messaging became A Thing as jet air transport took off in the 1960s (after the USPS helped subsidise both rail and air transport in the 19th and 20th centuries): DHL, FedEx, UPS.

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