Here in NYC the government wants everybody back in offices, because then they will be taking public transportation (as in Subway) and if they make it to work without beaten up, pushed onto the tracks, or stabbed, they will go out and buy lunch and do their shopping in the city, plus the occasional after-work get-together in the local bar or restaurant. All these will positively impact the economy and thus get more taxes. It is also obvious that they need to "heal" people from the lockdown mentality. (Good luck) Should there come another lockdown, there may not be much of a city to re-open.
All this said, tech companies, especially not the giant ones, are beginning to realize that there is no need for an "office headquarters". Where I work, we are from all over the Country, working probably much more than 8 hrs a day (because we are having fun with it) and planning to organize a company get-together somewhere fun when all this Covid issue is finally completely over.