Their success illustrates the benefits of breaking up—and more
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Governments are nudging them, but it’ll be messy
The two represent competing visions of the future
For now, they are still a long way behind
Forget valuations. Look out for search-engine hits and fund managers getting fired
From finance and medicine to used cars, artificial intelligence is radically improving market efficiency
Their leveraged bets on the software industry may soon cause big trouble
