

Yes, people consolidated wealth after that crash just as they did with everyone since.
https://www.history.com/news/great-depression-people-who-made-money
https://www.investopedia.com/financial-edge/0411/5-investors-that-are-both-rich-and-smart.aspx
https://www.bankrate.com/investing/biggest-stock-market-crashes-in-us-history/#crashing
No shit?