I can think of at least a few Dow stocks that filed bankruptcy. International Harvester, Continental bank, Eastman Kodak, F.W. Woolworth. Poloroid was a "Nifty 50" stock in the '70s, Probably gone as well.
I was just looking at this last night too. https://www.multpl.com/inflation-adjusted-s-p-500 It looks like we reached 1929 after 25 years but then breached it again in the 70s. My biggest take away from that chart and from the CAPE is that it will be a long time before we take out the Fall 2021 highs.
Do not forget about 80% to 90% cannot make the performance of the equity index like S&P500 longterm. It is only the index who is outperforming other asset classes like bonds or real estate or even Gold. I have seen a century curve with no index tracking only the pure individual stocks (do not ask me exactly how they constructed this in detail) that they made only about 2% per year in average. So individual stocks are a clear underperformer to bonds. It is only this momentum driven S&P500 index who makes the difference. But most do no hold such index funds so the truth for them is just gaining poor performance over the long run, except some bull market phases from time to time, where everyone is a genius and makes a killing.
I believe the 20-year return on REITs as listed in that chart could be an over-exageration. I say this, because it has been a common argument about REITs beating most things over long periods, however, I remember a very interesting writing from Niederhoffer in his last book where he explains why the returns from REITs are mis-interpreted and over-stated. If I get time sometime, I may have to dig that info back up...