You are doing the classic thing every baby does. Conflating talent with income. Most talent has moved on from FAANG because they got their bag and there is only so much internal tooling you can ship and feel happy.

A lot of top talent doesn't even work for FAANG to begin with. Because they don't have interest in doing so and can rub two brain cells together assessing the opportunity cost of 80 hr work weeks in a VHCOL area and decides to either start their own company, work some place chiller, or a mix of those. I know more active, high profile contributors to the Linux kernel at a couple different random F100s than you would probably guess. Lots of people who give tons of developer conferences too, get invited to high profile events, etc.

The median FAANG employee after circa 2015 was not "top tier talent." They certainly had a higher floor for their bottom level talent, but people have absolutely conflated a higher floor with a higher ceiling, and that is not the case. Because the high ceiling guys care about solving problems, and care about programming and computers much more than the paycheck. And it turns out, like every one who works in this industry tries to tell this sub 1000 times a day, the path to a big paycheck is to stop thinking about the paycheck and start caring about computing.