The big difference is that IPv4 isn't "expended" like freon. So you never go off the cliff in quite the same way. If one use case leaves IPv4 or we get one no

The big difference is that IPv4 isn't "expended" like freon. So you never go off the cliff in quite the same way. If one use case leaves IPv4 or we get one notch more serious on NAT, the pressure is relieved for a long time. We've been "out" of addresses for 2-3 years, and while prices slowly rise, not a whole lot has changed. Of course, ARIN and RIPE had it better than most of the rest of the world.