Unless the stock pays a dividend (and a lot of stocks have never paid one), their cashflow never end up in your wallet as a shareholder. Thus the only value you will get is the amount someone else will pay for your stock.

Sure they need some cashflow (after all, nobody wants to buy a bankrupt company) but to believe the stock value is a straightforward formula based on cashflows isn’t how the market works. Otherwise Amazon would have plummeted in price long ago.