Grift and fraud. Nobody likes to talk about this, but many people are running grifts, from doing nothing, meetings in the supermarket or on vacation, to running multiple jobs. I had a couple working 5-6 different full time jobs together. Another was working offshore using a family member as “remote hands” to keep a device connected in the US. It’s difficult and expensive to police.
Hybrid decreases effectiveness. A remote only unit is great, a on-prem unit is great. “Permanent” hybrid is the worst of all worlds. Remote people rely on tools more and they don’t work as well with people in site. Meeting transcripts rely on the different clients to identify speakers, and work poorly in conference rooms, for example. It’s also easy for bad patterns to develop where remote people get cut out by people talking off the cuff in office, or vice versa.
The majority of the quality of life improvements are really about time freedom. You’d get most of it by giving employees sufficient paid time and allowing them to use it. Remote first by business unit makes sense too, but I think that the risk is the remote workers become like the folks in “provincial” branch offices.