every FAANG is almost 20 or over 20 years old. Certainly engineers that have spent those last 20 years (if they haven't already) will retire probably over the figure in the spreadsheet. Will the particular FAANG companies last another 20 (or 30) years? Who's to say but I don't see whatever replaces them not being glad to hire former FAANG engineers. So yeah it's kind of a gravy train that you needn't disembark if you don't want to.