I think the government considers semiconductors a key industry to compete with china and I believe that matters. American electric car manufacturers on the other hand are a threat to germany's combustion obsessed car industry. I also think that Elon runs his companies in an unconventional way that maybe doesn‘t fly with german bureaucrats. TSMC will do things by the book and the saxonian government will welcome them with open arms. They won‘t see any of the local government trouble that Tesla had in Dresden.