Entering a new appliance market is difficult and expensive…
… and probably not worth their time. Speed Queen is a brand that you’ve either heard of and have strong opinion on, or haven’t. They aren’t enough of a household name (anymore) to enter the kitchen appliances market.
Plus dishwashers must certainly be amongst the most difficult kitchen appliances to engineer, with so many moving parts and the expectation that they don’t leak water… and SQ would definitely have a 10+ year expectation hanging over their heads. They’d have to hire engineers away from other companies, tool up a lot of new manufacturing processes, and invest in years of R&D. This is a lot of cost to a company that probably can’t afford it.
And to what end? SQ laundry machines are expensive, they couldn’t introduce a high priced DW unless it was advanced like Miele or Bosch. The sorts of people spending 1.5-2K on a dishwasher don’t want them how they used to make them, they want to top in modern engineering.
If they did go through all this effort, it would probably have two racks, a tall tub, a large motor purely for marketing purposes, “commercial grade stainless steel” (marketing), and be as barely energy efficient as could be allowed. They would advertise the heavy cycle’s usage of 10 gallons per wash minimum. It would be relatively loud for current standards and only wash truly well on the Heavy cycle (lol). Delicate, Normal, Heavy cycles with High Temp and Sani Rinse options. Heat dry is mandatory on Normal and Heavy (no fan included to increase reliability). And they’d charge minimum 1.8k for it, only warrantied if you buy through a SQ authorized dealer. (This is clearly intended to be satire).