I'd disagree at least a little here. Google has been surveying their staff about what they want to do after the pandemic is over, see this twitter thread where Google published some of it's data: https://mobile.twitter.com/lifeatgoogle/status/1308529118531...
People are split on what they want. Maybe people could be better trained to wfh, but some of us just prefer an office. While I am likely more productive at home (even with 3 kids there) I see that knowledge sharing with a large team is just harder (missing that hallway conversation, or seeing someone at a whiteboard and just learning random things).