It is a very cyberesque view/survey that is not really relevant to the unity7 project. I live in North America on the Canadian border adjacent from Detroit MI. I see all the time people flipping their iPads and and tablets for second hand lappys and desktops. Real work is done mostly on desktops and most persons want to extend the life of their lappy/netbook/desktop beyond that originally proposed by proprietary bean counters. PC hardware consumers of all walks of life and all age groups want to get maximum usage out of their hardware investments and the Ubuntu(s) give them exactly that. This is the Ubuntu beltway and to render and change Ubuntu systems to air and cloud only will be serious marketing challenge for the company, at least for the NA market. I rarely see anyone over 40 years old sitting in front of their tablets getting work done. In fact I rarely see anyone sitting in front of their iPads. iPads, phones and tablets are not - "sit down and get work done " devices. Perhaps in EU and the UK but not in NA.
Unity DE is a classical “get work done” operating system which could pull a lot of current desktop hardware into the 2030’s Users want to hold on to their desktops as long as they can , as long as Ubuntu provides a ways and means. If you cut off that ways and means then end_users will find some other way, some other linux system to keep their boxes going. (whoops)
Please , don’t get me wrong… gnome3 is awesome but it is obviously designed for jetters and mobilists, not for blue collar bread and butter users.