Because people are going to have to keep paying for services they no longer get value from. Someone has to clean the house, watch and educate the kids, etc.
I suspect even if they're working from home, having a nanny/cleaner/etc at home isn't "no value" just "less value".
But I still don't know why - if this is the case - why people who are still employed/working full time, getting their regular paycheck, just working from home, would feel the need to stop whatever domestic services they had in place.
Because there's a pandemic going on and they don't want outside people in their house? Also, some of these services are now illegal in many cities including SF (Child/adult/senior care is still allowed. I'm assuming cleaners aren't.)