Amazon.com founder Jeff Bezos has seen his net worth soar by $63.6 billion (Dh233.6bn) this year. AFP
Amazon.com founder Jeff Bezos has seen his net worth soar by $63.6 billion (Dh233.6bn) this year. AFP

Tech billionaires Jeff Bezos, Mark Zuckerberg and Elon Musk made $115bn this year