Right.. but the goal of the police work is to find the criminal and put them in jail for a while. This is meant to be a social deterrent, wherein, the punishment for the crime makes committing the crime not worthwhile.
> When you have somebody actively looking to steal $THING, they will find it and steal it.
Exactly.. which is why we use jail. You also seem to be suggesting that the lack of anti theft wouldn't matter to the overall rate, it just makes these particular cars more likely to be targeted. There are obvious and measurable problems with this idea.
> So it is a failure of policy, not policing.
Well.. if you don't have enough police to actually find and put criminals in jail, you can call that a policy problem, but the policy failure is simply not having enough police.