I don't get why they don't close airports for all but cargo traffic. That way they could close off all terminals, probably saving ~90% of personnel. With cargo

I don't get why they don't close airports for all but cargo traffic. That way they could close off all terminals, probably saving ~90% of personnel. With cargo only, just warehouses and a minimum of security and air traffic control would have to be on site. Keeping terminals staffed when people aren't supposed to travel anyway doesn't seem logical.