The main problem to get rid of Microsoft, is how they sold their services in the past more related to regulated environments. I worked at a place where we're using Google tools but with AWS as cloud provider, then one time we need to decide which tools we should continue use, the choices were Google and Microsoft. Microsoft won because they already had at the time the better auditable tools to track any single event across them which Google lack up to a certain point, we kept at least AWS though