flow of culture — Tarik Yildirim

Culture flows from top to bottom, not from bottom to top. Here are some possible explanations:

Hiring-decisions are either made by the top echelon or made by criteria determined by the top echelon.
Once an organisation starts exhibiting a certain culture, applicants self-select themselves into it.
Once people start working in the organisation, there is a tremendous pressure to conform to the existing culture.

Culture hardens as it scales. Hence the reason why you do not see values like openness and multiculturalism in larger organisations which need more social glue to hold people together. (Think of Google throwing out the coder James Damore for releasing a conservative manifesto.)

If you are a member of an organisation that you do not culturally belong to, try to limit the information flow as much as possible. That will hopefully decrease the cognitive strain.