For The Final Time
It is not manufacturers who are to blame for the current "wet wipe" washing machines, theytake their marching orders from various rules and laws. If a government mandates a washing machine built in X year, use less water than one produced in Y, their hands are tied.
In the United States, at least things may get worse. California is already making some very loud noises about requiring such machines sold in there, much more water stingy.
Sure you can innovate and such, but R&D costs money, and with washing machines rapidly becoming a "throw away" appliance, it is not too clear if consumers would pay increased costs. What is saving American appliance makers is the return of front loaders (some would say forced), to the market, thus giving them room to add on features that really do not do much, but drive up costs by making what should be a simple machine difficult.