YouTube, iPads, TV's, can float around in the homes of other families, and your kids can visit their homes and play on their Xbox or whatever.
But that doesn't mean these things need to be part of your kids home, work, or play routine. Even kids in nice areas around the bay area aren't about to suddenly bring home an iPad or iPhone without their parents notice. Kids will beg, but they will also learn to stop begging; they will learn that their family just does things differently.
I've seen plenty of parents choose NOT to buy their kids a major computing device until junior high age, and prior to then making them go through the inconvenience of typing on their parents computer.
It doesn't screw them up. It doesn't make them socially weird. It doesn't make them technologically aversive later, and it doesn't stunt their enthusiasm for play.
If you want to give your kids unsupervised play, because you need some personal or work time, what's wrong with biking around the city with friends?