The "real Dow", i.e. nominal value divided by the CPI inflation index, was about 14.6 in October 1928 and is now at c. 33.5.
This means that, over the past 80 years and in real terms, the Dow has grown by a tiny shade over 1% per annum, compound.
True, there have also been dividends; but the "get rich quick on the market" idea seems to be a form of riverboat gambling, winners taking from losers.
The biggest winners being the fund managers - so very few of whom even manage to beat the index, long-term, in their own sectors.