"There was no army of laundry ladies going house to house"
I wonder how old are you. There were actually women (usually) doing the very hard washing jobs for others (who could afford it, of course). Where do you think the term "laundress" comes from?
Just washing machines took away a very hard job most people were willingly to let disappear. Now machines could took away jobs people may be still willingly to do, because they are less hard and better paid.