Because most discussions about anything, really, are incredibly US-centric.
Most suburbia in Europe will have apartment buildings. Here's a typical suburb near Stockholm (I live in this one, close to the city): https://goo.gl/maps/rC65fRaPrv2PgjFp8 This one is 40 minutes away by commuter train: https://goo.gl/maps/pHvvwxtY88tfEGiv6 and https://goo.gl/maps/yQCkPtEGSSn8s2PJ8
Note: even though there are parking lots, no one is adding chargers to them because it's either too expensive or the existing infrastructure cannot support it.
The company that manages my building manages about 3000 apartment blocks around Stockholm. They recently sent a letter that they have found the possibility of equipping 200 (yup, two hundred) parking places with chargers.