Almost a decade ago, I was part of a 10 person team (that was growing) and while there was consensus around transition to Git, it kept getting pushed back. I eventually forced the issue by changing the deployment job in Jenkins for one of the main projects to deploy from Git instead of SVN.

I had to give several talks to existing and new employees about how Git works and how to use it. I was also that #1597 guy (https://xkcd.com/1597/). Back then most hires didn't work with Git before joining us, today of course it's different. Over time, all projects moved to Git as whenever someone was working on two projects, one Git and one SVN, they would ask "why is this still on SVN?" and soon it would be on Git.