Comment by kube-system

The main reason that organizations choose commercially managed solutions is because they don't have local expertise or staff to do things themselves. I do agree that on-prem solutions are better, but Zoneminder is probably not a great option. Besides being old and clunky, it also isn't anywhere near a complete solution, and the IP cameras people often choose to connect to them are often security nightmares. There are many good and complete commercial offerings that are secure and keep video locally.