I wouldn't save the driver is "safety". It's happened that a few highly-specialized symbolic manipulation tasks now have enough market value such that they can demand highly specialized UX to optimize task performance.

One classic example is the "Bloomberg Box": https://en.wikipedia.org/wiki/Bloomberg_Terminal which has been around since the late '80s.

You can also see this from the reverse (analog -> digital) in the evolution of hospital patient life-sign monitors and the classic "6 pack" of gauges used in both aviation and automobiles.

I meant the universality (openness) of desktop computers comes under threat, as the "walled garden" model seeks to make the jump from mobile to desktop.