They are funded by Google, their largest donator, and it is a symbiotic relationship. Beggers can't be choosers. Always remember the Golden Rule: He who has the gold makes the rules.
From Mashable in 2010
: "Google has opened up its charity wallet once again. This time, the search giant has donated $2,000,000 to the Wikimedia Foundation, the organization that runs and maintains Wikipedia."
From Reuters in 2011
: "But that may soon go away, thanks to Google co-founder Sergey Brin and his wife Anne Wojcicki.
The duo donated $500,000 to the non-profit Wikimedia Foundation, which runs Wikipedia and its sister sites, through their Brin Wojcicki Foundation."