Microsoft co-founder Bill Gates remains bullish on tech and what artificial intelligence (AI) could do for the world. To say he thinks it could improve things for businesses and individuals is an understatement. He expects it to be a game changer. He also believes the use of a digital assistant could potentially render some aspects of Amazon's (NASDAQ: AMZN) business obsolete.

In a recent interview, Gates hyped the importance of a personal assistant, believing that this could be the big upcoming battle for the tech giants.

"Whoever wins the personal agent, that's the big thing, because you will never go to a search site again, you will never go to a productivity site, you'll never go to Amazon again," Gates told CNBC.

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Source Fool.com