The feud between Elon Musk and Jeff Bezos has heated up with Musk’s recent “time to break up Amazon” tweet.

This was sparked by a tweet from Alex Berenson, who was complaining that Amazon’s Kindle Direct Publishing service had refused to publish his book ‘Unreported Truths About COVID-19 and Lockdowns’. Speaking on his book, Berenson said that his work was based entirely on published government data and scientific papers.

Musk responded to the tweet with “This is insane @JeffBezos”.

In his following reply tweet Musk added “Time to break up Amazon. Monopolies are wrong!”

Time to break up Amazon. Monopolies are wrong!

— Elon Musk (@elonmusk) June 4, 2020

Last April Musk took to Twitter to call Bezos a copycat when he announced ‘Project Kuiper’, which plans to launch thousands of satellites into low-Earth orbit.

Prior to this, Musk’s SpaceX project had already begun to launch satellites into orbit. SpaceX’s ambition is to create a network of 12,000 internet-beaming satellites.