Elite colleges train their students to be corporate and government executives. Corporations write the laws and pay the legislators to pass and enforce the laws. Government is an extension of business.
International corporations cannot afford nationalism.
It cuts into their profits.
So, colleges, which are bought and paid for by corporate America, train the future leaders of business and government to deprecate nationalism and patriotism. Corporate capitalism can't afford those value sets.
Plato and Aristotle taught the importance of ethics for the sustenance of the city-state, developing one's personal virtues in order to support the state.
Christianity taught the importance of morality for the Kingdom of God, developing one's personal virtues in order to better reflect the image of God in one's own person.
Today, corporations teach corporate values. This includes being "open-minded", being tolerant, being ignorant of history, culture and art. Cultural diversity is prized because it decreases solidarity and reduces political involvement while increasing spending. Hedonism is encouraged, responsibility discouraged. Our colleges teach this because they, like government, are a wholly-owned subsidiary of corporate America.
Just follow the money, folks.