> In many cases it may just be managers who need to justify having spent all that money on their office spaces.

I find this argument uncompelling as everyone can obviously see that things changed since February 2020, and sunk costs do not justify throwing more good money after bad. It could easily have been the correct decision to acquire more office space years back and it could just as easily now be the correct decision to divest that office space if more workers are remote, and it's not anyone's fault for not having seen into the future that there'd be a global pandemic.