What we have, here, is a value conflict. The powers-that-be have a budget to manage, and so they value fiscal sustainability. Instructors, conversely, have students to teach. They value quality education. Who should win?
Consider what it would mean if that economic analysis of mental illness determined that treating it was not profitable. What then? If easing suffering is not profitable, are we willing to allow people to suffer?
Our problems are complex. So complicated, in fact, they defy the ability of any single person to fully understand them, let alone solve them. Luckily, we're not alone.