I feel they are pushing their own narrative without really having any evidence.

We use Microsoft at work because we would either use Microsoft or Google for email. The email service is critical to the choice. We can’t run our own reliably and other vendors just don’t interoperate the same way.

Microsoft Office simply isn’t that expensive and it’s very easy to hire people who know how to use it and are comfortable with it. We don’t usually libre office because it’s really not practical to spend hours retraining expensive knowledge workers. Payroll is over half of our budget and our largest single expense. Software is cheap and isn’t even close.