I don't understand why people think profit matters for a company that isn't at maturity. Cash flow matters, and growth matters, and profit matters for mature co

I don't understand why people think profit matters for a company that isn't at maturity. Cash flow matters, and growth matters, and profit matters for mature companies, but why should all companies always be profitable? It seems like many of the world's most valuable companies recognized this prior to maturity, but people on the outside don't seem to understand. Growth is rarer than profit. If you want profit buy bank stocks.