Your confusing the Wikipedia community of users, which anyone is free to participate in, and have passed this RFC, with the Wikimedia Foundation, which accepts donations and runs the systems and networks that Wikipedia runs on.
https://networkcultures.org/cpov/2010/03/27/mayo-fuster-more...
Such hybrid and “community” driven systems are far from problem-free. But this one has created Wikipedia, which most people think is a good thing. Obviously it’s tricky to walk the line.