You can have pretty good salary in non-FAANGs, make a difference, and match your own software values with what you're doing.
I would even argue that by doing so, you're elevating those company, allowing them to then compete a bit more closer to FAANGs comps, and "stealing your talent" away from those less-matching software values, creating what I believe (from my own values) to be a virtuous circle.
Or you can grind at FAANGs, accept stack ranking and elevated salary, play the yearly promotion game and end up with a very nice pile of money. Then clearly do not expect them to change, and I would argue: you do not get to complain unless you are actively trying to change them from the inside