What's amazing is that Tesla has been providing NRE R&D for OTHER automotive companies for years already. Last year, $15 million of their revenue was from development services but as early as 2011, $55 million of revenue (>25%) was from basically doing powertrain design for companies like Toyota and Mercedes.

Link to last 10-K: http://www.sec.gov/Archives/edgar/data/1318605/0001193125140...

Tesla will definitely make a killing on batteries. I actually think the supercharger network is going to REMAIN proprietary as a competitive advantage for Tesla vs. other electric car companies. As someone who's done research in this in the past, there are already well-established standards adopted by the IEEE and companies like GE for charging. This is obviously to encourage the adoption of the technology.

However, since most electric charging networks are run by private companies or utilities, we may have the "roaming charge" issue that telecom had once upon a time. In other words, if you lived in Texas and got your electric charge from your local utility as part of your monthly bill, you may have to pay "roaming charge fees" for charging in California.

But if you're on the Tesla network, the "fuel" is part of your purchase price. This is Apple-level walled garden tactics and it demonstrates the foresight of Elon Musk and his team. What an incredible entrepreneur.