I found what appears to be a good and reasonably recent answers here (I would never just give a Quora link without checking it out first, somehow I don't trust

I found what appears to be a good and reasonably recent answers here (I would never just give a Quora link without checking it out first, somehow I don't trust all answers on that site): https://www.quora.com/How-does-Khan-Academy-make-money https://www.quora.com/How-does-Khan-Academy-make-money