Maybe a part of the problem is that the two work patterns are suitable for much different personalities, but when switching from all-in-office to remote, the mix of personalities leads to lower aggregate productivity. E.g. someone who needs a periodic tap on the shoulder (nothing wrong with that, I've known plenty of people like this) might do very poorly in a much more loose environment. Of course it could be argued that this is a badly executed remote switch, which could be worked on, but still - I'd guess that when starting out hiring for full remote, you preselect a group that works well in that environment.