Comment by treis
Because it's really hard for a company to do both. Even if it's a remote first and the office is just a place to do zoom calls. Human nature will divide it into two camps with social bonds being stronger within the remote/on office groups than across.
Speaking as someone who would have to be dragged back to an office, it's obvious that the in office group would win out. Bonds are weaker in the remote group and your type A ladder climbers will be overrepresented in the in office group.
So hybrid office is probably going to lead to all in office. Especially in these difficult economic times as workforces stagnate or shrink in these companies.
Some coordinated office presence + some WFH is a good mix that reduces commute times, increases WFH productivity (because in-office interactions lead to pressure to deliver), and maintains face-to-face access.