Let's say German court rules that X cannot operate in Germany. X decides to shut down any brick&mortar locations in Germany including any data centers located in Germany, but they do not stop Germans from accessing a public web service located outside Germany. What's the point? Will they then go after Germans continuing to use X?
In other words, a German court ruling against a non-German company can only go so far. However, IANAL, so willing to learn how a German court ruling would be anything other than a nuisance to a non-German company