[olq]

Well they have already ran out and the big old companies have their own reserved ipv4 ranges. They even buy other tech dinosaurs for their reserved ipv4 blocks in the order of $10 per adress. [1]

[1] http://www.gtri.com/how-to-buy-or-sell-ipv4-addresses/

[ghaff]

Amazon bought up to half of MIT's /8 addresses.