I read the story with interest and it's an affirmation that ev's are the eventual destination for everyone, but the article is clearly a speculative editorial, lacking the usual requirements for a serious argument (like actual evidence for example). We will all benefit when there is more competition, but writing a bunch of meaningless words of unsubstantiated conjecture isn't the right approach.
No doubt the German automakers will enter the market, but they will run into the same laws of physics that Tesla has faced. They won't be able to magically make a car that can go from Munich to Berlin at 100+ mph either. There's just not enough room in a typical car body to house the batteries and the law of diminishing returns will ensure that the increased battery weight is actually resulting in a loss of range and performance.
Furthermore, the Germans and every other car maker are up against their own PUblic Relations machines. They have defended ICE cars so long and disparaged EVs for a decade. Suddenly extolling the virtues of electrics now will make them look completely stupid. I've driven German cars for over 20 years, and loved them, but now I happily await my P85D. There will be competition, but it won't be any easier for Porsche or Audi to get traction (maybe even harder). Tesla has a solid foothold that is theirs to lose and it will be fun to see how this market evolves.