Who in first world developed countries, that is smart, competent, and capable, wants to take a ho-hum salary to develop home appliances? From an economic and financial perspective, it doesn't make sense for Germany to pump out high quality innovative home wares. The brightest German minds aren't working on stove tops, nor should they be.
It makes way more sense for emerging economies to dominate in the space, and unsurprisingly China now seems to be the global hub of mid-tech manufacturing, with lots of innovation in this space.
There is nothing on those higher end versions which make them worth anything close to the markup on the Bosch 800 fridge.
If I'm going to spend almost 2X, you better give me at a minimum fully metal and glass construction (almost no plastic). I get slightly more metal and slightly (very slightly) stronger plastics. That's about it.
What a scam. Don't buy Miele or gaggenau. If you want a truly high end fridge, you'll need a built in made by someone like subzero or its competitors.