That may well be true. But they are currently taking 15 times the annual amount they said they needed in 2013 to sustain their mission, and they would actually

That may well be true. But they are currently taking 15 times the annual amount they said they needed in 2013 to sustain their mission, and they would actually – literally – like to take 100 times the amount they said in 2013 was enough (see links above). The sky is the limit. They feel they should do things because they can raise money from Wikipedia, and then feel they should raise more money so they can do more. Meanwhile, salaries go up, and more and more paid staff are hired to create an ever-expanding bureaucracy that's quite removed from Wikipedia's volunteer culture. What you have here is a very clear case of mission creep. However, this change in mission is not reflected in the fundraising banners. The banners – as ever – give the impression that the Wikimedia Foundation is short of money for keeping Wikipedia, the one project everybody cares about, up and running. So there is a complete loss of transparency now. People think the mission is the same as it's ever been: they donate because they think money is needed to keep Wikipedia going. In fact, they're not funding what they think they are funding.