Point about the wind power industry is entirely correct - my goal was simply to put it in context. Many companies (including GE as you mention) are only so profitable by taking advantage of a multitude of tax credits/subsidies and the like.

Reference: http://www.nytimes.com/2011/03/25/business/economy/25tax.htm...

Several of GE's businesses are propped up by government subsidies. All I'm saying is that GE is not really different - Tesla simply happens to be in a sector that's particularly high profile and politically charged, and its claiming of those things are out in the open.