Maybe it's because nobody has anything worth nicking? Most people already have phones/tablets/consoles/tv's and there isn't any point nicking cars as a lot of cars need the on board computer reprogramming when you change a part which makes it pointless because you have to take it to a garage and as it's Australia it's not like you can ship the car to an eastern European country like they do over here. There's also GPS tracking that wasn't about years ago. It's basically reward versus risk. Over here the little scrotes wear hoodies so CCTV isn't a problem.