That is no longer the reality for young people. Rapidly rising wealth inequality means investors have more capital to purchase vital assets (particularly houses), putting financial security way out of reach. You simply can't invest in the things you absolutely need to live on anything but a temporary basis, and those who control those things can change the price at any time.

Working for a salary does not build wealth. Work is inherently valuable, we need stuff and skills, but we have to recognize clearly that the taxation and wealth systems in the modern world are absolutely bonkers, and that it is directly crushing workers' standards of living.