What is different this time is cloud computing / always connected devices. This enables easy collection and access to enormous amounts of training (and continuous retraining) data needed, as well as offloading processing to a single, central model that can be optimized for fat hardware for runtime.

If you step back and look at the tech we use everyday similar to expert systems + graph search like deep blue, it might seem like magic. Web search, online maps, digital advertising, all huge right now.

Yes. Chess and Go are that different.