Right now, WFH is a struggle not because of the "FH" part, but because of "cabin fever" effect of being around everyone all the time, the complexities of avoiding the disease - things which were done by professionals is back to self-run, everything from cleaning to child care.
In the past, I've WFH'd only when I have had a good reason to justify that. This was in the pre-Marissa era @ Yahoo and I was probably one of those people, if you counted VPN time. However, the good reasons which required to be remote are often the opposite of productive - my reason was that my dad was on suicide watch for 4 months.
But with EVERYONE being WFH without choice has changed several people who have held similar opinions in the past about remote work - the managers might still consider the "from home" to be bad, but they might have realized that they can maintain an effective organization, without constantly talking to people in person.
The next wave of this "remote work" revolution will probably not be people working from home, but people choosing to work in an area close enough to home, but far away enough to avoid the internal pressures of pending chores.
Before Covid, my favourite "remote work" location was the SF public library in Potrero & the Burlingame one which even has private offices. Wasn't exactly WFH, but it was remote & great.