@Npars01 @ian You're ... kinda proving my point here?
Nothing was done for centuries because the culture didn't value the freeing of women from the daily grind. The ability to technologically make life easier for women predates the actual making life easier by easily a century.
It took women hitting the work force in WWII and then not wanting to go back to the idiotic daily grind to finally effect the sea change needed for the technology (which was already possible!) to be mass produced.
@zdl @ian
Check the dates.
Rural electrification happened in 1936.
WW2 started December 7, 1941 for the USA.
A government program created the prerequisites to meet a need.
Government support often greases the wheels of progress.