That's because the landlord still expects rent to be due.
I see the reasoning and don’t think the ethics of our pandemic behaviors have been fully discussed.
the patrons apparently don't believe that their behavior is unethical, and in fact, think that the dictates of their rules are unethical, and potentially illegal too.
In addition, there's basic upkeep and maintenance that you're required to perform to keep a building insured, let alone to make it re-openable at some point.
It's not like there are alternative tenants who can pay around.