“After a decade of professional fund-raising, it has now amassed $400 million of cash as of March.”
The banner says “just £2” and implies the lights go off without you. The Wikimedia Foundation is sitting on $400 million, with well over $100 million in an endowment. Its own VP of engineering put running costs at about $10 million a year in 2013. The editors who actually write Wikipedia are unpaid. The fundraising pays for the Foundation.