If you were a shoplifter, would you REALLY want to have to depend on a union-operated bus to make your getaway??
Your transportation out of the area may not be a major concern. For shoplifting, your getaway is essentially complete once you’ve exited the store or the mall. For assaults or other mayhem, it could be.
What 'get away' are you talking about? Most of the stuff is put in a pocket or another shopping bag. Bus drivers aren't going to check for receipts before a person boards.