There's an in-person CIO Symposium event I usually go to and this year it was spread out into a series of short virtual events. One very common theme is that necessity made them do things that they were skeptical about, thought would take too long, would be really hard and... the world didn't end and, in fact, things turned out better than expected. A lot of experiments that people were afraid to perform were performed for them and things turned out not bad. Or even well.
Of course, WFH is a mixed bag and I expect 100% remote to be rare but I do expect a lot more flexibility at many companies.
The last 6 months isn't really representative of why we should or should not be encouraging WFH, but it at least seems to have opened more doors to accommodating it as an option in companies that would have previously been against it.