As Ava and Jax have said, in my area they stolen, not for resale as a unit, but for the metal, in particular the precious metal (platinum??) inside. The precious metal is taken out and then the remaining metal is discarded separately. There is a metal recycling company that pays XX$ a 100lbs. They don’t even look at it before going in the crusher.
It’s inconvenient and mildly expensive (with insurance) for most people, but can be VERY inconvenient and expensive for some. Last year a company in the area found out. 7 cube work vans, 7 missing catalytic converters missing Monday morning. 7+ employees without trucks to drive to the job sites unknown if they were paid) , 7 disappointed customers and the owner (and his insurance) with a $20000 repair bill.
Ken