[throw0101a]

> What is the sales pitch you would bring to the CEO of a Fortune 500?

When you buy or merge companies, and they both have RFC 1918 addresses, you'll probably have a conflict between the two entities. You'll probably have to implement NAT with-in your own network and hope the two sides don't have to talk to each other that much. (Or you completely re-IP the acquisition.)

With IPv6, either the companies will be using their own PI IPv6 space and/or they will be using unique ULA prefixes, so the chance of conflicts will be very small.

This at least was one of the business cases for Wells Fargo, "the fourth largest bank in the United States by total assets and is one of the largest as ranked by bank deposits and market capitalization":

* https://www.youtube.com/watch?v=EzTWjNUb4H4

[hansel_der]

for most companies the cost of an v6 transition is still greater than the cost of renumbering an aquisition.