I used to work in a office where everyone has a phone on their desk, and the only person who used it was management. Everyone else used the internal slack.

Then one year during a feedback session, someone asked how much the phones cost per month, and a bunch of management defended their use of it. While all the employees called it wasteful spending. Then they tried to call our personal number, and that led to talks of unionizing.

And that’s how we got rid of phones. No union though unfortunately.