As a UofM grad and still an Ann Arbor resident, Ann Arbor has significant housing supply issues and a city council elected to effectively keep it that way.
That said, there’s definitely more the university and others could do despite the opposition, and it’s getting more attention. Even as a student splitting a house with 6-8 other people, I was paying at least $800/month. Ann Arbor is not the easiest place to be a commuter into, so students have very few options.