Comment by indrora

Stuff like this goes back YEARS.

Back in the days of the Bell System, the upper management at AT&T believed that it was going to be circuit-switched forever, even as Bell Labs was building packet-switched audio networks and it was becoming clear that packet-switching was a vastly more efficient solution to moving large amounts of mixed data around at a time. The development of efficient switching networks [0] was fundamentally resulting in continually building bigger networks that took up more space -- it was the Strowger step-by-step problem all over again. Moving to a packet-switched system meant that you could have an infinite number of "circuits" so long as you kept track of the paths taken.

But even as AT&T Long Lines implemented this, upper AT&T management was firm that the fundamental design of the network was not to shuffle packets around but instead to connect point A and point B with services on either end for the subscriber.

Even when they did eventually try to accept the packet-switched system, ISDN was too big and bulky, too slow for anything practical, and by the time it was useful, Ethernet/IP came along and ate its lunch.

[0] https://en.wikipedia.org/wiki/Nonblocking_minimal_spanning_s...