An adversarial style of negotiation is appropriate when the buyer has greater bargaining power.

Adversarial (win–lose) negotiation is viable when buyers can leverage abundant alternatives and substitutes, reducing supplier power. In such cases, buyers can adopt tough tactics, knowing they can switch suppliers if necessary. By contrast, limited supply, single sourcing, or monopolist suppliers constrain buyer power, making adversarial strategies risky and often ineffective. CIPS stresses that negotiation style must be matched to market conditions and the power balance.