Substitute For replacement, Apple had to face the impact of this, as the most advanced technology (such as chips, hardware, software and so on) the researchers and developers, Apple has a great advantage. But if the alternatives can offer higher than the value of existing products, this will pose a threat to the existing products, based on this, the Apple Corp should strengthen the market research and investment. Such as hardware, such as Lenovo, Dell computer company will develop to the direction of thin and light, like Lenovo pad; software, Microsoft has been the Apple Corp's biggest competitors, such as the operating system; in the mobile phone industry, the rise of Nokia occupy a large market share, its sales increased year by year. 替代品
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