With smaller companies that can't yield global power. It would be better if cloud, office and OS would be separate. Then you wouldn't get shuffed OneDrive into the OS. It's also better for competition if the playing field is equal and one solution isn't the only one that can deeply integrate. Build APIs or don't do it.
Enemies of democracy don't want to do this because it would require acknowledge that technology companies in the US have been mostly a force of evil rather than good and the idea we should change that makes a small minority of people uncomfortable.