Comment I called this for YEARS! (Score 3, Interesting) 48
Many businesses need/want Exchange/Outlook and Excel; M$ knows this. So, M$ uses monopoly-like powers to install or offer products as a "bundle" at prices competitors with a narrower offering cannot match. Outlook and Excel desktop apps are still probably the driving factor for Windows OS usage as well, for business deployments. "Teams is free with O365" is why a company I know is trying to minimize or eliminate their entire Cisco voice and WebEx footprint. The only real problem is old copper telephone lines, some emergency phone regulations and a call directory.
I have often been down voted for bringing this up, now a very large government points out M$'s unfair bundling tactics. I hope they review decoupling Windows desktop OS license as well.