I've been in wifi coffee shops and in just glancing around the room seen screens where people are apparently working on or commenting on strategic plans, unreleased products, etc. I recall sitting next to a woman in a similar settings and she had a spreadsheet on screen with what was likely a list of employee names and their salaries (presumably HR, but me- a total stranger- was easily seeing specific names of people and exactly what they are paid.
None of this is trying- just noticing. Glance around and you sometimes see things on screens you should not see.
Yes, I could privacy screen it, but that's only a benefit offered up by the last critic. My much, MUCH more enthusiastic view of a Goggles-based laptop concept is ANY size screen on which to work while mobile. The privacy part is just an added benefit.
Most of my time, I work on a 40" ultra-wide desktop screen. However, when forced to laptop, 16" feels insanely cramped. Goggles MIGHT be able to make that same 40" become a light, mobile screen in the laptop bag... or 2 of them. That has massive appeal to me.