Internic address allocation policy. (fwd)

I still look forward to a future where every home has an IP address and I
thought cable internet access would bring that. However, up here in
Canada a new service from the cable companies is soon going to move to a
dynamic addressing system. The first reason they told me was that there
isn't enough IP space in the world.

Is it such a problem for them to purchase more IP space? There is room
for expansion in 24, so as far as I can tell if they expect more
customers than they have IP space for, they could purchase that space,
correct?

An article I wrote about the current problems with this new cable-modem
service is located at:
http://www.magi.com/~bill/linenoiz/LineNoiz-release-3.1.txt