>>90381352colleges are businesses that exist to make money
They hire the cheapest person qualified for the job
idealogues are willing to work for less as long as they can push their beliefs
Schools used to be built by the church for the same reason, we've just been slow to realize the new religion is a religion
Same reason these kinds of people take all the moderation positions and similar positions of petty power, they'll do it for free to enforce their beliefs