I always viewed the cause for slow IPv6 adoption as a lack of incentive - while IPv4 addresses are effectively free then where is the ROI in building an IPv6 infrastructure?
I guess that when IPv4 addresses are traded in a free market it is easier to realise the cost of not adopting IPv6, eventually leading to a faster adoption (which is a good thing for everyone, NAT is essentially making the internet a lot less cooler place than it could be).
Also, what would the alternative be? Just not handing out IPv4 blocks to new players and telling them "tough luck"? Or a lottery? I really don't know a better alternative to a free market.
I guess that when IPv4 addresses are traded in a free market it is easier to realise the cost of not adopting IPv6, eventually leading to a faster adoption (which is a good thing for everyone, NAT is essentially making the internet a lot less cooler place than it could be).
Also, what would the alternative be? Just not handing out IPv4 blocks to new players and telling them "tough luck"? Or a lottery? I really don't know a better alternative to a free market.