You want the advantage to be yours. Building it for your competitor would mean working against you. Check whether your market is open.
Why only one firm per practice area per market? Because the system is built to give your firm an advantage in your geography, and building the same advantage for the firm across the street would mean working against you.
So once your territory is claimed, it closes to your direct competitors for as long as you are a client. We check territory live on the fit call. If your market is already taken, we tell you on the spot, and we do not take the engagement.
It also means the question is not only whether you want this. It is whether your market is still open. Fifteen minutes will tell you.