There's no perfect solution and many conflicting needs.
1. The health needs of students and professors, some part of them are vulnerable, plus the normal health considerations of covid-19
2. The learning needs of students, plenty may struggle to succeed in an entirely online world. It might be required by reality, but there will be new difficulties for people.
3. Financial needs of the school - they still have to pay for classrooms, office space, dorms, the campus, even if they aren't using it right then
4. Financial needs of the student - they might have financial aid from the school or other sources, how does it apply when the school is remote or unclear, what if things change, what do you pay, what does your scholarship cover?
5. And now immigration clarity. That student might need to be in the us for other reasons - if it's grad school, your relationship with your advisor used to be crucial. Now you'll never have a chance to see them in person. No one wants to be terrified of being deported for violating a rule or the govt confused about their status. The school might close down with little notice, what happens to that person who can't afford to fly back overseas?