"But thanks to central locking, alarms and circuitry immune to hot-wiring, stealing a car is far harder than it was. In New York City the annual number of car thefts has fallen by 93% over the past 20 years. According to Graham Farrell, of Simon Fraser University in Canada, reducing car theft may have had broader knock-on effects than just restricting getaway options. Stealing a car for a joyride used to be a “gateway crime”, which would lead teenagers on to other crimes; now such escalation is restricted to Grand Theft Auto games (which, at least one study suggests, may themselves be reducing crime by keeping feisty young men occupied)"
So, video games have made criminals into lazy slobs. I don't buy the car alarm thing - in the 20 years that they've been common, I don't believe anyone has ever called the police when they heard one go off. I'm willing to bet that car thieves are able to disable car alarms faster than the car owner, that can't figure out what button to press on the fob.