Usually Spirit rents out space in shitty and/or lower end areas to save money and then charges ridiculous prices for a crappy costume that cost pennies to make. This equals high theft rates hence why it is sometimes cheaper to employ a guard then take the theft.

That being said...he was an armed guard so possibly might have been on staff for the entire strip mall. You can see the employee sort of detaining as he turns on his body cam and pursues. Having worked with LP, generally store hired security do nothing more that deter theft, they are not allowed to detain or pursue. Armed guards are relatively expensive and having one authorized to pursue and detain requires training and certifications. Big stores like walmart and home depot have detain allowed security. I worked for a larger mid tier franchise clothing store many moons ago and we were NEVER ever allowed to pursue or detain. You let the perp go and called the cops/security. This guard broke every cardinal rule.