On a matter near and dear to us on this forum, prior to WWII many homes still sent out their laundry, not just those in urban areas. Yes, there were washing machines, ironers, and everything else, but many housewives/households clung to old ways. That is soon as there was any extra money to be found in budget laundry was first household chore most got shot of....
Little by little appliance manufacturers began getting at housewives. All those advertisements about Madam being first line of defense in her home against germs and disease. To protect all she held near and dear a truly caring wife and mother would do her washing at home instead of sending it out. And thanks to new appliances she had no reason for not doing so, well until WWII came along. That event saw an unprecedented push of women into workforce, so some household chores fell by the wayside, including laundry.
No worries however because once war was over the post war era saw a huge push towards domesticity with women married, back in the home, keeping house and of course doing their own laundry. Soon as war time restrictions were lifted manufactures flooded the market with all sorts of laundry appliances especially fully automatic washing machines and clothes dryers.
Looking back the post war era until about maybe 1970's was the heyday for laundry appliances. We know what followed... The post war boom began to wane as pent up demand for appliances decreased and the boom in new housing also did same. What would be left is pretty much what drives market today; replacements and or new home construction.
What followed was a shaking out of the domestic laundry appliance market. What wasn't shut down ended up being bought by one company or another. This explains how now only a handful of white goods manufacturers (such as Whirlpool or Electrolux) own scores of former great appliance brand names.