And SpaceX will never be able to launch and re-use a rocket. And residential solar will never be mainstream.<p>I get the point of the original article, production manufacturing at this scale is a whole different animal from making products at lesser volumes for early adopters.<p>But there&#x27;s another way to look at it. It&#x27;s another challenge. And so far, Tesla has been up to the challenge. And so has SpaceX.