Earlier quoted context omitted.
I promise you there are still plenty of places where if a car alarm goes off, that people are paying attention.
I promise you there are not. In fact, I'll challenge you to find some data supporting your promise. I can't find any. I find some that says steering wheel locks work. I find some that says stuff that shuts off the car works. But none that finds that alarms do anything. "Highway Loss Data Institute studies show no overall reduction in theft losses for vehicles with alarms" (from 74 million car insurance data) https://…
One of us would either knock on the door of the place until the owner came out, or somebody would shoot the car until it stopped making noise.
A car alarm in my environment would be an anomaly, not the norm.