I'm in Vietnam and have a bunch of extended family around. The key is social bonds. Outside of the kids' school/sports/arts they're allowed total freedom. And the variety of play (both on and offline) is astonishing. But the thing that stands out is that a good half of them are curled on a couch or hiding in a corner on their phones...and the parents don't care...because as soon as a parent asks for something to be done, the kid drops everything and jumps to do it.

By having real people around (that love them) they know that everything in the phone is less real.