Many cities do little to nothing about bike theft. I've sat in meetings with a prior police chief of the city of Santa Cruz where he flat out stated, unless the owner sees the theft (or an officer does), they will not do anything. At the time, multiple other cities I spent time in (the east bay) would at least make contact with and check on people. If the person had bike theft tools on them, they'd be arrested.

Bike theft is one of the rampant issues in areas with excessive drug use, etc. Nearly every homeless encampment in west coast cities will have one or more people with piles of bikes and bike parts.