Earlier quoted context omitted.
Did it not happen? Even poor people today have objectively much better living standards than rich people 100 years ago.
A rising tide lifts all boats. Even poor people in 1960 have objectively much better living standards than rich people 100 years before, yet we work longer hours and have less security. What happens to you today if you loose your job tomorrow, and cannot find employment within 6 months ?
You'd be less screwed than you would have been 100 years ago in that situation, for sure.