It seems to me that these two can't both be true. IP Addresses cannot at
once be scarce enough to charge for and non-scarce enough that
scarcity is
a non-issue.
Fred,
scarcity is not the point. Differential pricing is.
ISPs need a way to charge vastly different prices for "business" and
"consumer" access.
Or, in other words, they need a way to devalue consumer access to be able to
continue charging more for business access.
One dynamic vs. multiple static addresses gives them that way.
That's all -- no scarcity needed.
(Though it's convenient to have a "technical" reason to explain this
business decision.)
Gruesse, Carsten