That's fully backwards. The people with the incentive to delay moving to IPV6 are the ones selling IPs. Those buying - ISPs - are also the ones that have the in

That's fully backwards. The people with the incentive to delay moving to IPV6 are the ones selling IPs. Those buying - ISPs - are also the ones that have the incentive to move to IPV6 as in an IPV6 world, they wouldn't have the spend that money. And ISPs are the ones best positioned for further IPV6. That IPV6 adoption is slow is precisy because buying ranges of IPV4 addresses is still cheap enough that people are doing it.