Even worse many even put people in large noisy factory-like rooms (open floor plans) where they commute to in the morning, so they can sit there and be distracted and unproductive, and then have them commute back at the evening.
There is a network effect as well, even if people work for companies which are remote, and they could move to a different state to be with family they won't, because most other companies are not fully remote so they stick to a tech hub just not to have to move again if they switch jobs.
You'd think Google, Facebook and Microsoft would lead the effort for working from home but that's not the case. If they switched you'd see very interesting side effects: areas of the country that are stagnating might revitalize, they'd be less traffic congestion, the whole IT work culture in US might change.