IMO, whether remote work is here to stay depends on two questions: 1) Where are employees more productive 2) How much of a pay cut are employees willing to take to work from home?
The answer to the first question is pretty clear to me. We will be more productive in the office, on average. Primarily bc it’s human nature to exert the least effort possible to obtain resources, and so over time, employees will find more ways to slack from home while looking productive. Though there are exceptions, companies will base their decisions on the average productivity of each potential policy.