Comment by mrweasel
Because they measure the wrong things or is completely driven by sentiment.
Sort of similar, a friend of mine was fired. Ostensibly for not bringing in enough revenue/profit in a consulting business. Very few of his hours where billable, so he looked unprofitable. The issue: He was working on internal tooling, building systems that everyone else rely on to do their jobs effectively. His value was hidden in the work of others, but that's not measured.
When looking a "work from home", you rarely see companies measure job satisfaction, stress levels or even do proper exit interviews. The sort of things you need to keep on top of the keep people long term. Many customers won't report back to your boss that because you sat a your desk at home you where able to help them after your normal working hours, saving time the next day. In consulting tracking billable hours is normal, but if you don't track when and where those hours are worked, you're not going to see that some work better at the office, while others have a skyrocketing productivity boost at home.
Other times you have bosses that wants "butts in seat" because they don't trust their employees. Hell, we had a sister company where the employees sat in a fucking horseshoe configuration at the office, on the "inside" of the horseshoe, so the owner could sit at the open end at check that people where working at all times. Do you think that fucker is going to let people work from home?
I knew someone that didn't trust their employees (small business). In the past they ran a different small business where their own employees would steal from them (not money; inventory) and this lead this person into a life-long distrust of people in general.
The problem though is their new small business employed mostly office-type workers yet they still had that hourly/retail employee mindset. Treated their employees very poorly and had high turnover as a result. Then COVID happened and suddenly everything got better for everyone.
He was forced to trust his employees working from home and they loved it. He, of course, was high anxiety all the time worried that his employees were slacking off. I asked him, "are they not getting all the work done?" and he was very adamant that was completely irrelevant. From his perspective, if an employee was doing anything other than "work" while on-the-clock they were stealing from him. It was a pretty clear message.
As soon as COVID was over he forced everyone to come back into the office... And shortly thereafter he had to sell his business because he couldn't find anyone to work for him anymore. No idea what he's doing now but I still see people with his attitude everywhere (in varying degrees from mild to extreme).
On the plus side that guy would never ever bother his employees after work hours. Which is quite a step above employers that treat their employees as always-available serfs.