The tech industry is a lot broader than some high-profile companies that have made public announcements. My circles admittedly include a lot of people who work remotely anyway but my sense is that this shift is going to be fairly broad and sustained for people who can productively work remotely. (That said, I wouldn't literally move without having some discussion and assurances for whatever they're worth.)

There are no guarantees in life of course but I know multiple people moving from cities to more rural environments.