Talking to lots of middle and upper management, the primary complaints I hear are hard to measure - poorer communication, less alignment, less innovation, etc. None of this reduces the number of tasks being done, but reduces the utility of those tasks. Measuring directly is hard, but ultimately you'd expect it result in lower growth - which many companies are seeing (but it's hard to disentangle this from the macro situation).
I think the hard reality is that companies need to make a thesis on the level of flexibility in remote/in-office work and commit, then 5 years from now we'll get an idea of what works well.
I think the hard reality is that companies need to make a thesis on the level of flexibility in remote/in-office work and commit, then 5 years from now we'll get an idea of what works well.