Since the mobile has become a dominant platform for delivering entertainment services, in a period of two generations we can expect a migration of television advertisement money into online services. The TV and the web are going to go into oblivion like the newsprint. We can also expect that Twitter will not catch up with Facebook or other major SNS'.
Also, it appears that the humanity is running a large-scale Stanford Marshmallow Experiment, dividing kids into those who can exert self–control and those who cannot.
The first follow-up study, in 1988, showed that "preschool children who delayed gratification longer in the self-imposed delay paradigm, were described more than 10 years later by their parents as adolescents who were significantly more competent."
A second follow-up study, in 1990, showed that the ability to delay gratification also correlated with higher SATscores.
From an innovation theory perspective, the smartphone represents the Dominant Design, while online services - the Dominant Use.