I don't think Germany or any other E.U. countries will follow.
Neither Germany nor Europe as a whole makes enough electronics equipment to replace everything that may have been rigged by the NSA or other nations' spy agencies. The NSA does not restrict itself to equipment clearly marked as "made in USA" either.
We cannot solve this problem by rolling back globalisation and division of labor, aiming for national self-sufficiency.
That does not imply rolling back globalisation or division of labor nor is it aiming at national self-sufficiency, it's about competition and having choices.
It's virtually impossible to evade US-american or chinese products if you want to buy a modern electronic consumer device. That is what should change in my opinion.
The choice that I would like to have is a radically more transparent, pluralistic design, development and production process. We need many eyes from all kinds of different people on every single piece of hardware and software. We won't get that by having one government take action against another one. This needs to be a global initiative.