That is ridiculous. I live with roomies who are not doing the same course as I am and I have to say that it is a very good thing.

So much to learn from each other, and yet people would rather stick their own group and be confined from everything different?

This is sadly true in most cases, which really only limits our potentials.
Do not blame the management.

It is the students.  Most only stick to their own groups and mix only when they have to.

How can we expect management to do anything when we ourselves dont cooperate?

Its always easy to point fingers at management, student council and authority; but most of us need to look in the mirror before speaking out loud.

yeap yeap, I didn't get on-campus accommodation after my 1st year. Since 2nd year shifted out till now.
Spare a day look around or if you already have friends staying off campus ask them to keep an eye out for houses up for rent.

and now we are neighbors..