I have no insider knowledge, and I’m speaking in broad terms here, but it is my assumption that the largest companies who have made it very public that they are

I have no insider knowledge, and I’m speaking in broad terms here, but it is my assumption that the largest companies who have made it very public that they are doing permanent work from home policies (ie Spotify and the like) will continue to broadly have that policy for the long term. There may be some teams within those larger companies that require, or strongly prefer, office time. It’s my assumption that other companies will be a mixed bag, with things settling in the next five to 10 years into something like “working from home is common, but not always an option”. Remember that not everyone likes working from home all the time, and those who do like working from home now may change their opinion as their life changes (eg having kids). I save this to partly explain why I think work from home policies will slightly and slowly erode over time.