I see the similarities between the 2 business models, and I agree with you that steem is to the Steemit social network what the battery pack is to Tesla.
I do not agree that Tesla is a battery company as far as their motivations lay. The battery is one of the underlying technologies, no doubt about it, but the product is the car, the solar panel, the power wall.
I don't think Tesla's mission is to drive sales for the battery. In fact I think they started manufacturing the battery because they could not source enough for their products.
To me this argument is like saying Apple is a software company and they build stuff just to sell more software.
The steam model may difer in this regard, I do not know enough about it yet, I just wanted to speak my mind on what I perceive to be Tesla's business model and strategy.
Great videos btw... watched a few... :)