dish-washing is a cost-center, not a profit-center, so really the solution is to cut costs by washing dishes as little as possible :)
Also check out my dishwasher-sharing service Dishdash.
It's the difference between "hmm, washing dishes is hard, I will do it better until someone notices and rewards me," and "average person buys less than one dishwasher in their entire lives...but they have to eat every single day...they could skip the dishes altogether!"