Knowledge, especially free and easily accessible knowledge is detrimental to elites. Under educated peoples are easy to coerce, control, manipulate, scapegoat, scare, etc. So the easier it is for people to educate themselves, or just be educated the worse it is. Capitalists by default want dumb workers who don't know the meaning of value, it's part of the reason theres been a massive anti-intellectualist push this last decade or so.