An arrest means having evidence of a crime and having law enforcement involved. Easier said than done. I know from experience, often LE doesn't put much effort into dealing with property crimes; burglary, theft, embezzlement, unless the victim is someone who matters or the dollar amount is substantial. I guess they figure it's just not worth the effort when the judge is probably just going to slap a wrist and turn 'em loose.

The cards are stacked against the victim these days. Take matters into your own hands and go do the cop's job, then they tend to get excited.