You're assuming rational actors. If the company is big enough then management won't care. It doesn't come out of middle management's pocket to pay for the extra

You're assuming rational actors. If the company is big enough then management won't care. It doesn't come out of middle management's pocket to pay for the extra space and they enjoy the feeling of control they have being able to tell people where to be and when. As for upper management they are too busy playing political games to care about those more ephemeral issues. Ultimately the biggest takeaway from this WFH situation might just make it clearer which employers are worth a spit, and which ones genuinely don't care about their employees.