Bear with me.....
So in the old days, most people either washed their own clothes or had staff to wash them for them. It took a long time to wash clothes so most people probably didn't have many clothes except for their Sunday best.....
Cue the washing machine. Clean clothes, easy to wash and that means you had more than 2 choices.
With choice comes people wanting to sell you things such as clothes 
Just imagine a world with no washing machines. I know that's the reality for many people - and I am sure there are people on here as well who don't have one.
(linked to this programme about TV dinners and the modern economy)
www.bbc.co.uk/programmes/p04xyqfs