The question for a franchise owner managing 20 markets is not whether competitors are advertising. The question is what they are doing in Denver versus Kansas City versus Philadelphia, and whether you can track that without opening Facebook Ad Library 20 times every week.
Manual monitoring works when you have three locations and two competitors. It stops working when the number of markets exceeds the number of hours you can spend on competitive research. The workflow breaks because each market needs its own review, and the information volume turns into noise before it becomes a decision you can act on.
The multi-market monitoring problem has three parts: the channels that matter, the manual workflow using public tools, and the decision point where automation becomes worth the investment.