Back in my college theater days, I remember one of the teachers remarking that what sets theater apart from other types of events is the audience. A sporting event with no one watching still counts for the rankings and records. A play without an audience might as well be a dress rehearsal.
Well, sporting events are being scheduled without fans [Update: briefly – once players started testing positive for covid19, they started cancelling outright]…and my old college just announced that this quarter’s performances will be done without audiences.
Though I guess they do still count for class credit.