I don't think remote work is necessarily efficient in every case. Yesterday I filled an order with my mail order pharmacy, a call that takes about 5 minutes per month. This call took a very non-efficient 30 minutes, and the worker revealed to me they were working from home, and apparently her computer was extremely slow (the audio quality was also not great, presumably it was a bad VOIP link). I didn't dig deeper, and of course we know of a number of reasons why that could be, and potential fixes, but my takeaway is WFH isn't a panacea - there's work to be done, and it may not be useful in all situations.