Major product cycle changes tend to come around roughly every five years or so. The technology industry is fond of labeling these movements as paradigm shifts, but we’ve all heard too many of those things referenced, so let’s not go there.
Looking back over the last decade and the emergence of touch, our appetite for richer controls is never long satisfied. As soon as one finger touch arrived we wanted two-finger touch. Pinch and zoom wasn’t far behind and multi-user touch soon followed.