Did you read those articles? The first one is bringing the suit alleging that the college didn't investigate a rape allegation, and the second one alleges the medical system failed by prescribing a dangerous combination of medicines. The third was settled for a very small amount, only slightly more than a year of tuition at private schools. And the last one was fairly absurd and unreasonable and was almost certainly dismissed. So I don't think your argument or analogy really works to support your argument that colleges have to fear losing millions in lawsuits to parents of unstable kids.