Many people don't realize how non-trivial renumbering a network is. I transitioned the resnet at a public university from a /19 to a new /18, and it took several months of planning to pull off.
90% of the space was assigned via DHCP, but that remaining 10% which was statically assigned was a lot of work. Imagine tracking down every device assigned an IP address, scattered across a college campus.
Our routing configuration was trivial (single super-net, single site, &c), compacting an enterprise /8 would be an insane amount of work.
The long view isn't making a quick buck off v4, it's moving to v6 as quickly as possible.
90% of the space was assigned via DHCP, but that remaining 10% which was statically assigned was a lot of work. Imagine tracking down every device assigned an IP address, scattered across a college campus.
Our routing configuration was trivial (single super-net, single site, &c), compacting an enterprise /8 would be an insane amount of work.
The long view isn't making a quick buck off v4, it's moving to v6 as quickly as possible.