Perhaps if you had taken a course on ethics you might recognize the good that comes from something that doesn’t directly lead to financial gain!
It's easy to talk about professional ethics and choosing good over income on an internet forum when the impact it has on someone else's life has no impact on yours. If I left a FAANG to work for peanuts at some volunteer agency, I suspect you wouldn't be there to chip in when my loved one needs support and suddenly my ethics can't foot the bill like my old salary could. You have no idea the impact a FAANG salary would have on my life and my loved ones', so it's not very thoughtful to suggest that somebody who has to prioritize financial gain is unable to see good other than financial gain.