Title IX does not go away for the Ivies. Many moons ago I had a nephew who had been admitted to Brown (didn't go) and wanted to run there. He wasn't a blue chipper by any means, just wanted to be on the team with no expectations of running regionals or anything along those lines. Bob Rothenberg was coaching there at the time and we'd known each other for ages so I asked him what the deal would be for my nephew.
He told me that he used to take anyone who wanted to run. His teams often had numbered in the 40s but now Title IX meant that he could keep only 22 guys.