ARIN and IPv4 trading

My former colleague at Burton Group, Dan Golding, wrote long ago of the need to create a market around IP addresses, allowing those who got a ton of address space when address exhaustion wasn't a concern to sell their excess space on the open market to those who need it.  It seems pretty logical that such a market would ease address exhaustion concerns for a long time, and avoid a push to implement IPv6 until such time as multi-homing and NAT issues are fully addressed.

ARIN disagrees: ARIN fights IP address trading as transition to IPv6 may get new deadlines