Re: "We have now run out of IPv4 addresses"
>You talk about "academic institutions" like they're one entity, but they're not. There was nobody in a position to force them all to cooperate.
Back in the early 1990's the Internet was controlled by a handful of US academic institutions: they ran the DNS servers, they ran the core routers etc. everyone else just followed.
As I say there was a window, now long closed, that was recognised at the time, when people called on the IPv6 working group to deliver something usable quickly.
>remember that v4 only won everywhere in the late 90s;
TCP/IP had effectively won in 1989, it just took time for people to migrate off DECnet, SNA, OSLan, XNS, etc.