I'm curious about this, how does the price of education increase because of increased enrollment? I just figure when lot's of people go to Walmart that doesn't

I'm curious about this, how does the price of education increase because of increased enrollment? I just figure when lot's of people go to Walmart that doesn't increase the cost of their goods. Or are you inferring that colleges could fallback on their endowments with fewer students? I'm not sure many institutions could rely on this.