The English version of the online encyclopedia gets a little over 7.5 billion hits a month — roughly one visit for every single person on the planet per month.
That's a number that could, even at a conservative estimate, be worth tens or even hundreds, of millions of dollars in advertising revenue every month. Fortunately for all of us, Wikipedia has remained not-for-profit, relying on donations to fund its operations.
Last year the Wikimedia Foundation (the foundation behind Wikipedia and the other "wiki" projects) reported income of $129m, 93% of which came from donations and contributions, which helped to fund its 550 strong workforce.
Source: https://www.chartr.co/
