Your research was very helpful, thank-you, but I think there IS a path to profitability.
You showed that Amazon claimed about $350M of the VA assets as Income in the year they became profitable. Applying similar percentages to Tesla's current VA assets, we can estimate they could be able to claim about $420M as Income in 2019.
Given results for the first 3 qtrs of 2019, Tesla needs about $547M profits in 2019Q4 to become net profitable for the whole of FY2019.
That $547M is just $434M more profits than 2019Q3. We know Q3 was profitable with 15k fewer auto deliveries. Since all fixed costs and production labor were already covered at Q3 production levels, addtional deliveries in Q4 go straight to Profit, less the costs of materials for those cars.
Let's assume COGS (less labor) is 50% (similar to Sandy Monroe's est'd costs). For an ASP of $50K/unit, that's $25K addtional profit per unit. That sums to $375M addtional profit for the 15k additional units delivered in 2019Q4.
That leaves just about $60M in profits still needed to make Tesla net profitable for the whole of 2019. Can we find $60M?
December's $2K "Performance Boost" software upgrade for the existing fleet of all Model 3 AWDs could easily bring in $20M in profits (software == high margin)
Carbon credits are VARIABLE and DISCRETIONARY for Tesla. It seems certain they would claim these credits to push them across the line to profitability
So there you have it. A few wild-ass assumptions, and POOF! PROFITS! Cartman would be proud!
Cheers!