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Suppliers and especially manufacturers have market power because they have information about a product or a service that the customer does not and cannot have, and does not need if he can trust the brand. This explains the profitability of brands.

供应商，尤其是制造商拥有市场力量，因为他们拥有关于产品或服务的信息，而客户没有也不可能拥有这些信息，如果他能够信任这个品牌，他们也不需要这些信息。这就解释了品牌的盈利能力。

— Peter Ferdinand Drucker 德鲁克