And I bet it will help with that- but I don't see that as the sole purpose. He's an industrialist. He saw he'd need batteries for his electric cars, so he said

And I bet it will help with that- but I don't see that as the sole purpose. He's an industrialist. He saw he'd need batteries for his electric cars, so he said "I should make batteries". Then he said "Who else needs batteries? Solar producers". So Tesla now makes cars, batteries, and solar panels. That wasn't just by chance, that was planned. Now he says "I have a rocket company I want to scale up, but I don't know if demand will be there". So what does he do? He makes a company that could be profitable, but more importantly fills in the demand he wants to have for his rockets. The rocket business is bigger, which makes it more stable. The internet company might work, or it might lose money, but it's still a tool to the real goal. This is why Amazon made AWS. Because they needed cheap, simple cloud infrastructure. Alexa/Echo helps people buy more stuff. They're building a shipping infrastructure ostensibly for themselves but probably soon enough for customers as well.