The referenced comment rehashes the evils of Ballmer's Microsoft which Nadella has mostly corrected. Satya Nadella has embraced (but not extended!) Open Source. Their Azure strategy puts all platforms on a level playing field - yet has also made Azure an incredible place to make Windows/Microsoft technologies shine. It's a great place for all apps.
Yes, they control Office and are the defacto office document standard. What they do with Office now is affordable and ubiquitous. No other office document suite can do this. They are a for-profit company, and Office serves their customers very well. Yes, in Ballmer's days this wan't the case, but today you can run Office (365/Cloud) on a Chromebook and on Android and iPhone as supported apps.
Meh, he lost me when he tried to say Microsoft success in cloud is due to Office. Microsoft's success in cloud is due to having a good enough cloud platform and being better at selling to enterprises than Amazon or Google. IBM and Oracle can sell to enterprises but lost because their cloud platforms suck.
Linux and Open Source tech is a huge part of Azure now. They profit from people using Linux on Azure. They don't have a reason to chase customers away when they are making money from them.
