This is wrong, some of the companies excel very well and continue to grow faster than S&P 500 and Housing too. Higher confidence 10 years on FANGs and companies like TSLA & BA.
See for example: hanera bought AAPL 1998, but warren buffet bought few years before at $99.
I was out of stocks between year 2000 and year 2012, but resumed stocks from 2012. Year after year, gain is 20% or more.
If you promote a really stock in its early years, most likely I would buy=> No one will inform you, it is up to you to find the stocks on your own and buy it just like you seek your own home/rental.
It is pretty hard to know the stocks early period onwards. That is the main reason, people follow innovators/leaders Steve, Tim, Elon, Mark and Gates…Trusting they do it right.
If you still like to go early startup, there are sites where you can get into private shares of many bay area companies (pre-IPO companies). Risk is yours, you need to analyze and decide it, many may wash out and some may come up. You can invest in Robinhood (5B valuation) or Space X (25B valuation)
Sample site is here (Risk is yours) https://equityzen.com/listings/