考研英语预测试题及答案 | ||
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发表时间:2012-5-11 21:36:09 来源: 互联网 点击次数:3157次 | ||
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bsp;own destruction.The phenomenal growth of Internet businesses is already fueling a Klondike-style gold rush,with far too many diggers looking for far too little gold.Economics teaches us that it is hard to become an upstart with a basically free commodity.Think of ice in the Arctic,sand in the desert,seawater in the ocean or,for that matter,the seemingly unlimited“hot air”on the Net.
In the 20th century,the proliferation of cars,radios,movies,televisions,mass retailers and computers all inspired a sense that we had begun a New Era.Each breakthrough promised new riches and unprecedented prosperity for the innovators.But in the long run,they always failed to deliver to investors the expected rewards. Why the letdowns? In part because every great innovator invariably attracted great imitators,who competed with the original and eventually depressed his“excessive”profit margin by commoditizing the invention.Furthermore,great inventions have always been followed by greater innovations,which,through the process known as creative destruction,render the previous new technology obsolete.And when inventions become vital to the economy,they are frequently brought under the& |
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