> So if they no longer have a contract, how is it legal for Flock to continue to use the allocated resources? Why not hit them with theft of service for continuing to draw power and use public infrastructure?

Well we don't know what was in this contract was that they had with Flock in the first place, but usually a contract termination like this would have some requirement to give a reasonable notice to allow Flock to disconnect cameras etc, and a week probably isn't reasonable notice.