As for restricting culture, we still have actual people to interact with, so not to worry.
Not for long -- Russia has made emigration almost illegal, but none of the international press have seen fit to pick up on this.
Oh, really? You serious?
An extract from Eden:
'An indistinct image emerges of doublers' Orwellian information-controlled civilization that is almost self-regulating, with a special kind of system of government—one that officially does not exist and is thus impossible to destroy. The society is controlled through a fictitious advanced branch of information science Lem dubs procrustics, based on the control and stratification of information flows within the society. It is used for molding groups within a society and ultimately a society as a whole to behave as designed by secret hidden rulers. One example described in the novel is the above mentioned settlement, kind of a "concentration camp" without any guards, designed so that the prisoners stay inside apparently of their own "free" will.'
Please, note this was written in 1959.