There is a well-developed fencing process for this kind of thing: goods are stolen by individual thieves or groups; fenced to black-market warehouses; then redistributed to individual sellers, who either hawk in flea markets or to local businesses, or ship the goods in bulk to other areas. It's been this way for years. Gangs of bicycle thieves used to roam the entire Bay Area (probably still do) with this model—I believe they were affiliated with some L.A. groups as well—and more than one group was busted on state charges in the last decade or two.
Anyway, the people running the stolen goods warehouse intermediaries are committing felonies, regardless of whatever proposition or do-good D.A. people are huffing about. Where are the detectives? Where are the prosecutors? Where is the state of California?