They aren't in the shops long enough to open a safe. They are stealing merchandise. They are in there and out of there in less than 60 seconds.

The stolen merchandise is easily sold on the street. No one wants to talk about that though because it doesn't fit the narrative of "if only they were allowed to take credit cards..." or "The ATF should reclassify marijuana so that these robberies don't take place!".

You don't see other businesses that have a lot of cash on hand getting robbed like this. Why do you think that is? It's not the cash. It's the merchandise.