> People who would be considered wealthy by 1920's standards are considered poor today.
I did a double take when I read that sentence. Is this really true? The 1920s in the West (North America and Western Europe) were a golden age for income inequality. The rich were... well, crazy rich. Would they really be considered poor today?
That is a cheeky reply, but some light research tells me that the Rockefeller family borrowed huge sums of money to build that complex. Also, modern day technology billionaires worth 50B+ USD could easily build their own Hudson Yards -- the modern day equivalent of Rockefeller Center in New York City.
Typically these arguments boil down to how many high-tech items you can afford that were still crazy expensive back then, completely ignoring things like living space that actually matter much more to your quality of life.