Earlier quoted context omitted.
Prosecutors decide whether to charge. Cops quickly learn that arresting people that will not be charged is a waste of their time. Seattle has a similar policy. Property crimes are not enforced.
If the police really wanted to deal with property crime, they'd go after the pawn shops and the fences, and the scrappers buying stolen copper. No, that wouldn't stop people stealing things for their own use, but it would hit the professional thieves hard.
https://www.nbcbayarea.com/news/local/Fremont-Detectives-Bust-International-Theft-Ring-With-Millions-in-Stolen-Electronics-472047833.html
Perhaps local fences still matter a great deal, but it seems like they're becoming increasingly less important.