The articles folks have kindly posted from the business press are SO conventional wisdom. Having founded a small company that has competed (and STILL competes) with GE, Siemens and Philips in medical imaging software (
Vital Images), I can tell you from personal experience that the pundits NEVER understand small company innovation. They only celebrate it after the fact. Sure, at some point, TESLA will probably have to more deeply partner with Daimler, or be acquired, to succeed in the long run, but think of Porsche or Ferrari. They did that, but still remain great brands in their own right, and have made massive contributions to auto technology over decades.