One person said they'd spoken with colleagues who had chosen to go hybrid, and those colleagues reported doing work in mostly empty offices punctuated with video calls with people who were in other mostly empty offices.

This is the crux of it. All of our meetings now are virtual. Full stop. Companies had to adapt during COVID and to do that they got things like teams and SharePoints going. Now these tools are still in place and the genie is out of the bottle. No going back