1 offer all shops free surveillance hardware, you will offer them notifications when a suspect enters the shop. You need some PR stuff with big numbers where you claim on how many of your partners/clients are marking suspects that commited theft and how many billions are saved with this AI tech.
2 collect all the videos, do face recognition and connect the people n the image with real identities , infer more personal data from the person facial expression, posture, clothing, stuff they look at
3 profit!
4 collaborate with NSA and FBI to make sure the government will not have an easy job shutting you down.
bonus , you can extend to clubs, schools,parks, bars. You can rent the hardware for private owners with a discount if they mount at least one camera pointed at the street.