Cornell has been exemplary, but they had good reasons. At many of the Ivies, most of the students live on-campus; Cornell has 65%+ living off-campus. They knew that those students would be back in their small town anyway, so they devised a plan to test all of them. Indiana did the same.
Even at Cornell, orchestras are shut down, official off-campus travel is shut down, etc. In fact, the Ivy statement, which DroppedThirdStrike posted on a different thread, is very clear:
"The public health measures now in effect at all Ivy League universities have been carefully designed to support our teaching and research missions while keeping our students, faculty, staff and neighboring communities safe. These policies include restrictions on travel, limitations on campus visitors, and other pandemic related regulations that are not compatible with the Ivy League’s usual competition schedule. In the Ivy League, these measures must apply equally to our athletics programs along with other academic and co-curricular activities."
I agree 100% with MidAtlanticDad, they should have announced this in December. I hope/assume that the coaches told their athletes that this was coming.