I could see a situation where a lot of classes are virtual for lectures and so forth, but then maybe students report to class or a testing center to take examinations. I actually earned a second masters from Ohio University this way. We studied independently with some lectures viewed asynchronously, some live Skype discussions with the professor or other students, and with proctored testing at the university or an approved off-site testing center. I am sure most universities could work it out.
While there might be some lab kits that could be done outside university research facilities, I agree that the courses that require advanced science and technology practice or research would more likely need to be on campus. I think art and design type courses might be impacted too, as a few weeks ago, I read about a University of Cincinnati art student who wanted a refund for the Spring Semester because they viewed their distance education for art coursework as substantially inferior. So, I think there may be some issues on quality control that impact the ability of schools to offer alternatives to classroom education successfully. It should be easier to facilitate online education with social science and humanities, but even with that coursework, there may be some issues with doing research on human subjects that may need to be worked out in the more advanced research classes.
I think the broader issue is whether the states or regions have COVID-19 under control by Fall. If the USA is where it was at in most of March and April, then it will be problematic for having pro or college sports. But I think and hope people are adapting. Even after opening up, if people continue to practice social distancing and protecting themselves, it will help contain the spread of COVID-19 with the "new normal" until a vaccine is developed (hopefully). Another big issue is how the sports venues adapt...for example, I suspect there to be restrictions on spectators and hardening of the facilities. What will those be? Will fans be banned? Will fans be allowed but with restricting attendance to a certain percentage of the stadium or arena capacity? Will fans be required to have PPE? How regular will facility maintenance have crews cleaning and sanitizing the facilities during the games and practices? What testing of athletes will be in place, especially in all these contact sports? I think those are things that the Big Ten, NCAA, NFL, MLB, NBA, etc. should be thinking about to support bringing games back.