The argument that customers will be able to hire a competing firm to protect them against a rogue defense agency has been critiqued by Jonathan Bond's essay, "The Price of Private Law", which argues, "If two defense firms are engaged in a truly ‘local’ dispute, and the remaining firms are not convinced that either their own interests will be affected or that systemic destabilization will result if the conflict continues, then the costs of intervening and ending the inter-agency war could presumably bar such third parties from stepping into the crossfire." Bond also argues that some firms may not be concerned with the risk of alienating other clients, because their clientele may consist of a small number of, or even only one, enormous multinational corporations. Bond further argues that some PDAs may reduce their risk of retaliation by carrying out anonymous sabotage or terrorist attacks.