Sadly, many of the folks who are involved with ARIN are sadly short sighted in this regard. They dismiss both the idea of an address market upon v4 exhaustion and the idea of clear title to address blocks.
I can imagine a similar scenario in the boardrooms of Exxon et al. A young executive suggests that gasoline prices should be raised to $20 per gallon because reserves are dropping. The seasoned executives glance nervously at the unknown Russian oil reserves and the huge Canadian oilsands reserves and wonder what would happen to that plan if huge new supplies suddenly entered the market. Let's face it, IPv6 is close enough to IPv4 that any attempt to put a price on IPv4 addresses will simply cause a massive migration to free and plentiful IPv6 addresses. --Michael Dillon