New office buildings will be like new malls or new nuclear power plants. No one will want to build them, since businesses know WFH is cheaper. Just right now, they have a lease and they have to keep up the act but as soon as they can, they will cash out. After a generation, population growth will be enough to get the reduced office use back up to full, and then the people of this generation will swoop in with a office downsizing buzzword trend that will make “de-office-ing” the rad new thing once the leases terms are up and the company stands to SAVE money.