So if that happens, embrace the touchscreens then? I mean, in the 90s, Microsoft was pretty hung ho about having voice as the main interface to computers in the near future. They kept the keyboard, which, given the history of early noughties voice recognition, was probably just as well.
My point is that you shouldn't design things being made right now for an entirely speculative future change.
I don't think anyone believes that Tesla will have actual self-driving cars, which don't require constant driver attention, within the lifetime of the cars currently being produced.