Good article. I would like to add a thing. Local politicians see the symptoms — their voters/their children are not able to get higher education seats in colleges domiciled in the State. Then they work backwards and reach conclusion that adding domicile requirement will work. If enough seats were available for students, the problem wouldn’t arise. Hence, large investment by State is a primary requirement to maintain diversity in educational institutions and then the acquired acceptance of diversity will make it a norm in the society.