70年代是市场区分和产品线外延的年代。 紧接着80年代初进一步的市场细分把市场越分越细，目标客户群越来越小。

The 70s became a decade of segmentation and line extension.

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虽然运通卡瞄准的是利基市场，以持有一般支票账户的客户为目标客户群，主要功能是用于支付孩子的大学费用，但运通卡收取最低的手续费。

Although the AmEx card appears aimed at a niche market a way for people with normal checking accounts to give money to college kids, for example it is charging minimal fees.

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举例说，伊万·尼克将雪佛兰的目标客户群描述为“平凡的英雄”，这个概念在全球市场上略经调整后就可以推而广之。

Chevrolet, for example, is meant to appeal to what Ewanick describes as everyday heroes, a notion that can be adjusted in the respective worldwide markets where Chevrolet is sold.

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