When Raytheon (sp?), sold off it's laundry and other divisons, Alliance Laundry Systems got the commercial stuff (Speed Queen, etc) and Maytag residential (Amana, etc). At the time of the sell-off, an agreement was made that Alliance Laundry Systems would not market the SQ brand for residental customers until after a certain period of years, that period expired a few years ago hence Alliance's launch of the SQ line back into the domestic laundry market. IIRC Maytag did make some noises about legal action at the time, since based on their dates Alliance was not supposed to re-enter the market, but nothing came of it in the end.
One thing keeping Speed Queen down, IMHO, is the lack of a strong domestic appliance distribution system. Maytag, Whirlpool and the others have had ages to build channels, relationships, and more important brand awareness with consumers. SQ laundry appliances are very hard to find in many areas (still), and not very well known.