I think that despite what LinkedIn influencers promote, a lot of people take advantage of wfh to be less focused on work. Not all, maybe not even most, but dealing with this (and not knowing who will fit into which camp) eats into the efficiency saving.
Also once the majority of a team is WFH, it's very tempting for management to take this one step further and start supplementing, then replacing, with off shore workers
Nobody is focused on work in the office, it's politics and coaster culture everywhere. WFH allows me to my work efficiently and quickly. I don't need to look busy because I'm delivering.
> a lot of people take advantage of wfh to be less focused on work
That has been my impression, too, but not for very good teams and often to a fairly small extent.
The bigger issue with WFH is that it requires a management that can write well, do virtually all comms asynchronously and still quickly spot and address both technical and people issues. My 2c.
Also once the majority of a team is WFH, it's very tempting for management to take this one step further and start supplementing, then replacing, with off shore workers