Germany has a strong preference with its local brands. It is still easier to find local repair shops that handle BSH and Miele machines than cheaper Asian brands.

You do pay premium for the quality. It is worth it though. My parents' Siemens Washer-Dryer combo is still strong after 15 years. A couple parts needed to be changed last year but after the replacement the machine works very well now.

Don't know about the US. From what I can tell Samsung and LG appliances are certainly less common in Europe than the European brands (there's also cheaper brands like Beko or Gorenje).