>And would the US still being able to say "national security" if it was fully owned by German business running on servers in some Swiss mountain?

I suppose they could. But I am fairly confident that if tiktok was a German company, this would not be happening. China is reaping what they sew here. On top of getting a taste of their own medicine.

It is unfortunate for the Chinese owners though that they have to pay the price for their government's actions.