Bezos a copycat - Elon Musk comments on Amazon's Zoox purchase

Elon Musk called Jeff Bezos a copycat — again — over Amazon's Zoox acquisition. Here are 9 other rivalries that have formed between some of the world's biggest tech CEOs.

· While there are many close friendships among tech CEOs in Silicon Valley, there are plenty of feuds, too. 
· Some appear..