My take on it is that people will adjust, and that the most productive environment is the one you're most familiar with. Many professions like sales, legal, and investment banking rely on putting on a professional "front" to make a good first impression. This is much harder to do when you're sitting on a couch at home and have a couple kids screaming in the background. IMHO this is a good thing, because the constant impression-management needed in these professions is a huge distraction from the actual substance of these jobs, and anything that punctures the impression-management bubble and forces people to deal with real human realities is an improvement. Already I'm seeing a big normalization of things like childcare, screaming toddlers, two-parent schedules, breastfeeding, and so on - this can't be shunted off as "woman's work" and relegated to the home anymore, when the home becomes the workplace and both parents generally need to trade off to make it work.
Basically I think our society before coronavirus was broken and coronavirus lockdowns are simply forcing us to deal with the ways in which it was broken. The old society isn't going to last much longer, and it's better to deal with that and build a more resilient, more honest one than to try to preserve the rituals that many industries had developed in 75 years of peace.