These things are all part of Amazon, not separate companies. Moreover: > The Amazon.com e-commerce store This was mostly a copy of eBay which used the existin

These things are all part of Amazon, not separate companies. Moreover: > The Amazon.com e-commerce store This was mostly a copy of eBay which used the existing Amazon market dominance. > Kindle (category-defining) Kindle came after the excellent Sony e-book readers. The reason why Kindle was so much more successful was the existing market dominance of Amazon combined with the fact that they used a proprietary Kindle-specific file format to squash the competition. > The comparison to Gates is just pathetic -- instead of Twitter and private space programs, his second act has been focused on things like food security, HIV/AIDS, and polio. SpaceX was not a "second act", except if you count PayPal as his first successful company. SpaceX was founded before Tesla. They do offer a global satellite network which brings Internet to remote areas around the world. That's quite different from a mere "private space program". As for the Gates foundation: This is not a profit driven company, so it is difficult to estimate how successful it is relative to the funds it has. I was talking about Musk's abilities as a founder and manager, not about altruism. (He definitely did things which people might classify as altruistic, such as paying for Ukraine's Starlink access for several months.)