Has the company looked at which departments need to be on-premise and then let the other ones have flexibility? If the departments who work remotely now and then are meeting the company's goals, it seems like a model to follow.
No they have not. And yes, it would seem to be a good model to follow. But they are not interested in looking into it. I guess eventually they will be forced to look into a remote policy due to attrition, but sadly, they will probably be able to hold out for a few years more before doing so.