If you look at a lot of interfaces that are built for a specialized power user (e.g. cashiers), they avoid pointers and have keys for everything. Also, AutoCAD, the last I used it, looked to be centered around command-line primacy.
Magit[1] is another modern example of a TUI done right: discoverable, good dwim[2] inference that doesn't get in the way of experts, plus an escape hatch for typing out the exact git commands for those 5% usecases.
[2] do what I mean
I'm not saying that keyboard-based operation is superior in all cases, but a good keyboard-centric interface can eliminate the need to acquire a target (e.g. menu/toolbar item) for the most common operations because there's a hotkey. Well-understood operations can go almost at the speed of thought (either the operator's or the machine's).
I can say that this talk of using the keyboard being so fascinating that it takes up significant mental resources to be not represent my experience using and seeing others use keyboard-centric interfaces. When I use magit, or when I was operating the minilab I mentioned above, I don't have to think about what key to press to do the thing I want. I am in fact "so disengaged [with the mechanics of manipulating the interface] that [I] have been able to continue thinking about the task they are trying to accomplish". Competitive StarCraft is another example that illustrates the same point without relying on personal anecdote.
It might be possible to do a smoother and more effective version now that we have CSS3 and all these cool transformations available.
I imagine the next revolution in UI will be because our computers change form and present in a completely different way, for example a virtual assistant that lives in the cloud and talks to you via AR visualisations and plain old speech.
Revolutions are not usually a reworking of the dominant mode but a displacement to another medium - e.g. iphone replacing computers for many people.