If people are fired without cause, they are still eligible for unemployment. The purpose of unemployment is specifically so you can continue to pay bills. That is it's literal purpose.
Who do you imagine can't pay rent due COVID19, who could pay rent before?
There may come a time, when public aid has dried up, and people are still under house arrest, but until then people still have an obligation to pay their rent, since the government is giving them money explicitly to do so.
Again, I'm not saying on time. That's why there is a moratorium on evictions (but when this is over, people will owe back rent if they haven't paid it).