The fact that quality didn't follow is pretty evident in just about every item you buy now.
My personal experience:
Maytag washing machine bought in 1972
Lasted 35 years with hardly any maintenance.
Maytag refrigerator I bought in 1969 used until 2006! It was still working when they took it away.
Professional experience.
GE 150 horsepower electric pump motor. Purchased in 1938 ( not by me

) and with minimal maintenance was still running 24/7 when I left that place in 2002.
Perhaps the most famous of all in either industrial or non-industrial use is The immortal Kingsbury thrust bearing at the holtwood generating station in Airville Pennsylvania. Commissioned in 1912 and used 24/7 since still in operation today with minimal wear and an estimated 200 to 300 years of use left!