The problem is, IMO, that it is a very narrow use case with a very specific user base that is willing to be very very flexible with this particular user interface (apps timing out when backgrounded, swiping instead of switching via Command+Tab, the low viewing angle etc). It is an interesting preview of what a 'cloud terminal' future could look like but I can't help wondering if the vast majority of viewers on HN are cringing at the thought of just how many backwards steps in UI evolution they would have to take from the familiar desktop and laptop PCs.