All I want to say about this is that the technology specialists, especially in networking, are usually not this opposed to change. Things change for networking and systems folks all the time. We're used to it. Most of the time the hard sell is with the management folks who Green light projects. They don't want to "waste" money on something that "nobody wants".

Legitimately, one company I asked about IPv6 said to me that customers had not requested it, so they haven't spent any time on implementing it.

As if customers know what's good for them....