If its societal return on equity Tesla is a Golden Goose. Is there more productive company on Earth?
We can’t know since a big bulk of their business comes from the government.
I’d buy their shares to subsidize the sending of the US and EU government on one way trip to Mars (in a MVP version of the rocket).
Same for Boeing and all the others. They made the United Launch Alliance because SpaceX is so cheap that they can’t compete on their own. It’s great for @janitor his tax money, because his government is spending less this way on space .