Thank you for providing this valuable context. I am hoping to advocate for OSS transition in my workplace and these examples go a long way to help make my case.
Check out "Europe as a Software Colony" [1], it's an excellent documentary including about the Munich case specifically.
Then watch the Scale 22x talk of the former Mexican CTO, because those stories are so close to industrial espionage it's absurd what kind of influence Microsoft has over diplomats and ambassadors. [2]
I wonder if there is some particular MBA/managerial jargon (in the sense it grabs their attention) to use when talking about this stuff.
Power differences, contractual leverage, vendor lock-in, motivation versus costs to make changes, etc.
I am thinking about opening my own shop, distinguished by digitally sovereign offerings, for instance, Stormshield over Cisco, Proxmox over VMware, Matrix/Element over Microsoft Teams, Nextcloud over SharePoint...
I've been doing m365 and azure for more than three years by now and I just feel terrible. Especially regarding some of our customers, which are small gGmbH (kind of NGO). Instead of making a secure, privacy focused offering we just sell them the usual m365 package. We basically push them into the data industrial complex just to get some collab tools and mail.