Many many large universities do not have enough on campus housing for all students. My son is at a university in Texas and they’ve told everyone this year that there is only room for freshmen on campus next year. Everyone else needs to find apartments. Parents on the university Facebook page who have students at the other big Texas U’s say the housing situation is far worse at A&M and UT.
Honestly, how big of a problem this will turn out to be probably depends on the university. My son moved off campus after freshman year. For two years we kept our room and board cost the same or less than it had been on campus in the dorm. This last year it is more because my son has a one bedroom apartment to himself. It’s a little more trouble to figure out the “lay of the land”, so to speak, and find an apartment, but not nearly as bad as we worried it would be when he was a freshman, in our experience. At a university in a high cost of living area, a lack of on campus housing might be more of a concern.