I think the reality is that you never get the best of both worlds. Companies will not spend on expensive real estate and amenities for people only in the office

I think the reality is that you never get the best of both worlds. Companies will not spend on expensive real estate and amenities for people only in the office 2-3 days per week. Either there will have to be big sacrifices (open offices with no reserved desks/seating/equipment, like how consulting does this), or there will be no office offered at all.