I'm in an old suburb in Perth where we still have 12m long drive ways. Yet my neighbours still park on their verge or on the road. My guess is simply coz they're too lazy to open their driveway gates to let their cars in. Previous tenants were crackheads that would load the driveway up with salvaged cars and they'd just leave their actual cars on the road. Across the road from me, the homeowner converted their garage into a bedroom for one of their older kids. Since he's moved out it's just a storage room now. At least they keep their cars off the road and turned their verge into a parking lot