Edit: to be a little less terse, in 1996 I quit working for Amazon. There were multiple reasons, some not connected with the company, but a number that were based on my perception of what sort of corporate culture it was going to be have. And yet ... here we are.
Is there anything I could have done in the 14 months I helped build the initial version of amazon to change how things turned out? Is there anything I could have done after that time if I had stayed? Employee #1 had similar misgivings but stayed for 5 years, and was arguably equally ineffective at altering the "nature of the beast".
So sometimes, even though it appears that we do have the power to either (a) withdraw our labor from an organization (b) remain and voice dissent, it ends up doing no good if the actual leadership is following a clearly defined (in their mind) path.
There will always be enablers for the sort of culture that a company like one of the FAANGs want to build.