The exhaustion of IPv4 address pool was easy to predict even in 2000, just by extrapolation of the growth curve. Then came IP telephony backbone and the mobile

The exhaustion of IPv4 address pool was easy to predict even in 2000, just by extrapolation of the growth curve. Then came IP telephony backbone and the mobile internet, topped up with the cloud, and the need became acute. For the large corporations involved, at least.