Gee, you mean people don't want to shop with roving packs of feral youths?
Actually, the businesses in the mall are often the strongest advocates for those mass transit facilities. They rely on this for their low-income employees.
You’re right. The gangs have wrecked a couple of malls in my area. Many of these malls invested little to nothing in security, so the gangs roamed the malls trashing them, assaulting customers and stealing merchandise. The parking lots, particularly at night, were unsafe. One local mall has spent some money and effort on better security. There is even a local police substation in the mall. Much of the problem has been relieved.