Over the last few decades, as new digital appliances have emerged, most of them have been mostly for "play" or "personal" use.
Though notebooks, tablets and mobile phones can be used either for work or personal pursuits, the trend is towards use of devices for entertainment, personal communication, learning and expression, and less and less for "work."
A recent survey of European users by Forrester Research illustrates the trend. Asked what sorts of applications and activities they used their various devices for, it is pretty clear that the multi-purpose devices get used more often for play, personal reasons and entertainment, rather than "work."
The corollary probably is that application development has shifted overwhelmingly to personal, entertainment and leisure time activities as well.