At the moment it seems equally likely that some companies come out of all of this with the "lesson" that remote work caused their downturn in productivity and stock value (who can remember that every other company experienced the same when your investors only care "what have you done lately?" and "what have you done 'proactively'?") and we'll quickly see a return to "everybody needs to be in the office together" culture back backed by the same consultants that learned the wrong lessons after Marissa Mayer's Yahoo! house cleaning and were still badly ratcheting companies towards as miserable as possible colocation strategies.
It seems about 50/50 to me right now which group will prevail. At least with US public traded companies the only inertia seems to whatever shiny fad stock traders are enamored with versus whatever misery HPCs manage to sell on golf courses in C-Suite handshakes. (ETA: Some of whom, the worst stock investors and HPCs are the same people, of course.)
But working from home will expose a lot of stuff that can be done from home, a lot of employees who turn out to prefer working from home, and a lot of CEOs and accountants and so on will realize a lot of money can be saved on real estate. People are being quoted in the news along these lines, you don't have to anticipate it.
I am a advocate for working from home. But I know plenty of people and roles who are suffering a great deal from working from home.
I know working from home all the time is not optimal, but reducing the "drive to work" days and replcing then with "work from home" for people who prefer that would be great.
I'm thinking of how you have something like a powder or gravel, and you shake the container and it levels out like liquid.