I'm sure someone, a very long time ago, said "The ARPANET isn't dying, it's changing." When a technology changes a large amount, we can safely say that the old

I'm sure someone, a very long time ago, said "The ARPANET isn't dying, it's changing." When a technology changes a large amount, we can safely say that the old version of it is dying or dead. The real question is: How much change does it take before we say that the Internet as we know it is dead and replaced with something else?