Elon Musk is 'a jerk' and 'not caring' – but shares some traits with Jeff Bezos and Bill Gates, his biographer says

• Elon Musk is a "jerk," his biographer Walter Isaacson told Quartz. 
• He also drew comparisons between Musk, Bill Gates and Jeff Bezos' "hardcore" leadership styles. 
• The writer suggested that it's not always a bad thing, as it means they can be tough and fire people.

Elon Musk is a "jerk" because he's "not empathetic" and "not caring", according to his biographer Walter Isaacson. 

The writer, whose book was published this week, seemed to suggest that those qualities were not necessarily bad for business leaders.