In addition to their stock price, these companies also pay very well. In fact, if you are lucky to get an offer from Netflix, their aim is to pay you and keep you at "top of personal market". That is, they do not believe anyone will pay you more in total comp. Netflix does mostly, if not all, base salary as opposed to equity grants.
From all my friend in FAANG, this has seemed to be true, Netflix employees make more than anyone else I know in tech.