The Evolving Network: SDN and Network Fabrics, are we done yet?

For a few years (maybe 10?), we seemed to have reached some sort of happy equilibrium in networking. Ethernet and IP won the protocol wars and came to dominate almost all voice and data traffic. Things moved along very nicely and stayed that way for some time. We were able to build functional networks that got data from point A to point B and just added some capacity every few years and it kept...