You are right, but there are some exceptions. For example, I own a commercial Miele dishwasher and it's exactly like their consumer version but even more robust

You are right, but there are some exceptions. For example, I own a commercial Miele dishwasher and it's exactly like their consumer version but even more robust and simple. Furthermore, it's equipped with gigantic blades to destroy food leftovers. Other examples of overkill objects I like are some commercial vacuums for clean room environments with spectacularly good filtration and seals, therefore no itching if you are allergic to dust (e.g. some Nilfisk made in Denmark). Or industrial fanless PCs which are sealed and have fantastic copper coolers (e.g. Compulab, Tranquil and many others).