Mr Musk responded to the Amazon founder on Twitter with a silver medal emoji, a clear reference to his wealth
Mr. Musk’s tweet hit Amazon.com Inc. Responded to a tweet by Mr Bezos, the founder of.
, which referenced a 1999 article that cast doubt on the tech giant’s business model.
“Listen and be open, but don’t let anyone tell you who you are,” wrote Mr. Bezos His tweet on Sunday night. “Today, Amazon is one of the most successful companies in the world and has revolutionized two completely different industries.”
Mr. Musk’s estimated net worth as of Friday was $222 billion. That’s more than doubled in the past year, according to the Businesshala Billionaires Index. Mr. Bezos has an estimated net worth of $191 billion.
M/s Musk and Bezos did not immediately respond to requests for comment.
Earlier this year, Mr Musk overtook Mr Bezos as the world’s richest man, largely driven by a sharp rise in the value of Tesla and his private rocket company SpaceX.
The two have gone back and forth in recent months as the world’s richest people, pitting two of the tech industry’s biggest rivals against each other. It can be difficult to establish the exact net worth of the world’s richest people, as many of their assets are private.
M/s Musk and Bezos have previously taunted each other. Mr Musk questioned Amazon’s power over book publishing, calling it a monopoly. Mr Bezos has ridiculed Mr Musk’s interest in colonizing Mars.
Amazon last year bought a self-driving-car startup that would compete with Tesla.
M/s Musk and Bezos also compete in space. Mr. Bezos is the owner of the privately held rocket company Blue Origin LLC. In July, Mr. Bezos and three passengers reached the edge of space aboard New Shepard, a flight that was part of a company-wide mission to expand human space travel.
Blue Origin has faced criticism over alleged cases of security and sexual harassment. US aviation regulators last month said they were reviewing a letter signed by a former employee of Mr Bezos’ space company, which claimed the company had prioritized speeding up safety on some of its rockets.
Mr Bezos’ tweet on Sunday was in reference to a cover story by Barron that was published in 1999. Barron’s is owned by Dow Jones & Company, Inc. which also owns Businesshala.
Write to Talal Ansari at [email protected]