I would love a faster dishwasher -- not because I need the dishes washed faster, but becuase I live in an open-plan flat with the kitchen and living room in the same space, and anything to reduce how long I have the dishwasher churning away would be wonderful. Fortuanately, I tend to get away with a 30-min wash for most days, but someone please invent a 10-minute dishwasher please :)
Dishwashers in commercial kitchens are rapid, much less than 10 mins. I have always wondered why, exactly, we can't have that at home. A dishwasher so fast that it's done while you're still clearing up from dinner and you can put stuff away immediately would be fantastic and is clearly absolutely possible.
Commercial are for high throughput. Professional are for special needs, like labware or medical equipment, and have customizable cycles.
Typical cycles of 25-30 mins, and some with cycles as short as 3 mins.
But they're still about 5x the cost of a basic residential model, even if cheaper than commercial types.