Maybe a few engineers are making that in SV, but the vast majority are under $200k for salary. With public companies that are doing well in the stock market, total compensation can certainly be $500k. But I think it is an important distinction to make that more than half is from equity and that equity is only lucrative while the company stock is doing well. If the stock market crashes or the company's stock gets in trouble, most of those engineers won't be making $500k.