I love fossil. Something about it's opinionated workflow that matches what I think. But
network effects. I just can not bring my team to use fossil. They have to share code with others. Other departments. And everyone (99%+) uses git. It just feels like a disservice to force them to use fossil. It is a catch-22.
It is similar to so many other things in the tech space. Trying to get fellow developers to use functional style idioms. Trying to enforce immutability. It is like something big (like a facebook or google project) has to force the community to get on board.