Re: I do wonder...
I'm curious about the same.
I'm currently working at a major IT outsourcing company, ~80k employees in various locations around the World, mostly US, but a lot in the UK, EU, Asia etc..
Pre-covid they had an office-first policy. i.e Everyone had an assigned desk, and you were expected to be in the office 5 days a week, with few exceptions (they even monitored desk utilization).
Most offices are now closed, or have minimal staff on site. I haven't been to one of our offices since March last year, and I've had one face-to-face client meeting in that period.
A short while ago, the company announced that productivity hasn't been hit, other than in a few specific cases, and that overall, productivity has actually gone up, and everyone seems to have settled in to the new way of working.
So much so, that the company has now started a process of officially switching almost all employees to a formal Working from Home status (the few exceptions being people who have to be physically on site, such as specific secure accounts, or people who deal with hardware in data centers etc.).
They also plan to close down most offices, and reduce office space to a few hubs in central locations, with mostly hotdesks and meetings rooms.
They are also in the process of setting up a home workers evaluation process, so that if you need something, like a monitor, office desk, chair etc etc. They'll sent to your home (my guess is this will be 2nd hand stuff from the closing offices!).
Only thing really worrying some people, is that not everyone finds working from home easy. Some people have lack of space, or young kids that don't understand you can't play with them etc. and some simply don't like working from home. So not sure how that's going to play out.
As you say, interesting times ahead!