The US still controls ICANN and with that they can pretty much do with DNS names whatever they want. Steal it from a German registrar? Well yeah, they actually can, what are you going to do to stop that? That is a known issue, actually.

I fully agree that they can switch domains but do not underestimate the importance.of domain names.

Also, they can force Google and Bing to censor Wikipedia completely, not having any links to it anywhere. With that, for most users it won’t exist anymore

There is a shit load of things that they can do to really make everyone miserable, this is what you get for giving the US damn near veto powers on Internet issues