I am one of https://wikimediaendowment.org/benefactors (donated years ago), and now I am totally unhappy with what is happening with Wikipedia. It has been an important lesson learned.

To keep a nonprofit efficient and impactful, it is crucial for its governance to have skin in the game; otherwise, there will be no long-term alignment of interests. More details on why and how we implement this at the Open Source Endowment: https://kvinogradov.com/osendowment