Amazon, Alphabet, Alibaba, Facebook, Tencent - five of the world's 10 most valuable companies, all less than 25 years old - and all got rich, in their own ways, on data.
No wonder it's become common to call data the "new oil". As recently as 2011, five of the top 10 were oil companies. Now, only ExxonMobil clings on.
The analogy isn't perfect. Data can be used many times, oil only once.
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