> I'd estimate a century ago "everyone" in my family and maybe in the country worked for a stock market financed industrial company, or indirectly in that all their revenue came from stock market financed industrial companies.

That is not true at all of my family - they were all farmers until my parent's generation. To pull out some real statistics: in 1870, over 50% of Americans were farmers. A century ago it looks like about 30%.

https://www.agclassroom.org/gan/timeline/farmers_land.htm