If you do some more reading about Elon Musk you'll find out very...

If you do some more reading about Elon Musk you'll find out very quickly that he's making very long term bets and is not really motivated (at least anymore) by making money. That's not to say that Tesla doesn't have a responsibility to be profitable in the long term, because as a public company it does, but Musk's primary motivation seems to be to advance humanity in ways that he believes are crucial. The big goal with Tesla is to speed up the world moving to sustainable, clean energy, the big goal with SpaceX is to make humans an inter-planetary species. His other side companies have similarly lofty goals. I'd highly recommend reading the very in-depth waitbutwhy articles on Elon Musk and his companies: https://waitbutwhy.com/2017/03/elon-musk-post-series.html. The author has had a lot of personal access to him.

Yes he's often been off with his timelines, and has had numerous setbacks, but if you look at the big picture of what Tesla and SpaceX are doing they're on track to do exactly as he's planned. With Tesla you can read his first and 2nd 10 year plans here: https://www.tesla.com/en_AU/blog/master-plan-part-deux. Their success is demonstrated by the massive shift now just beginning with major car manufacturers and governments towards electric vehicles. This simply wouldn't be happening so quickly without Tesla. Solar generation and battery storage are the other pieces of the puzzle, and their focus is relentlessly on driving down costs. The 14kWh 2nd generation Tesla Powerwall, for example, has double the energy storage capacity at nearly half the cost per kilowatt hour of the first generation. This is already worth the investment for many households, and you can be pretty confident the 3rd generation will improve significantly again.