> If a supplier needs to sign other orders, and this pen is the best one available, the supplier may decide to buy this pen. Since the orders are within the range of what the pen will sign

Who decides what’s within the scope of “what orders are within the range of what the pen will sign?” The boundaries are never clear cut. You’ve got a vendor who could kill switch critical military technology if it’s used in a way they decide falls outside the scope of what they want.