Citation needed - I never heard of a corporation being required (or allowed) to do law enforcement (private security companies might be contracted bt the government, but simply going and doing is most definitely not possible). The UN declares that a responsibility of governments, and one of the keys to the land claim and recognition of the state.

In some jurisdictions it's legal to stop a crime by appropriate means, but it is not a responsibility of any private person or entity, and it also does not mean you do it normally - that's where you're crossing into the "private army" territory.