@Paul_Taylor@mathstodon.xyz When my university tried to forcibly switch all of the faculty into Exchange, I was able engage faculty governance — and our union — into slowing the process down. We eventually got them to let (most) faculty choose whether to get migrated into Exchange or Gmail. That was the best we could do. But at least it meant that most faculty were able to opt out of M$. Previously, my department had run its own network and services, but now almost everything is outsourced.