Autodesk to doing this too. Was: "Personal" computer no more
It's not just Microsoft; Google, Apple, and pretty much all the big players seem to be enthusiastically moving in this direction. ... And I hate it.
Autodesk have just explicitly confirmed their latest desktop CAD/CAM product ("Fusion 360") will not have support for storing your data on your own computer. It's Cloud only. There is literally no way of keeping your data out of their cloud.
That's directly from Kevin Schneider, Director of Product Management for Fusion 360.
Too bad if your competitors are US based, or otherwise friendly with various US groups. :(