I concur with your observations - that's the reason I posted it here. There is a bonus for Tesla here: they will succeed, since the legacy car makers have not enough strength by themselves. (Also ref. the cooperation with Amazon which is more than just a supplier deal, the joint work of Ford & VW on some of their platforms etc.)
But there is a malus in there for Tesla, too: since German politicians see this as a matter of industry politics, they will quite happily do everything in their power to cut out Tesla, unless Tesla (somehow) becomes part of the German car maker circus... German institutions have a clear anti-Tesla bias and I fear this will increase.
If - despite all of this - Tesla should soar in Germany, I would see this as a very very very(!) strong move. I think Tesla had a strong showing in mind for Model S which didn't happen. February numbers for the Model 3 were positive, if March is even more positive, I think we might be able to shift the narrative.
Either way: we will see. I maintain my point, that Germany will remain difficult for Tesla (
@avoigt might want to provide his more optimistic view of the situation).