You are /s'ing, but the fact that it didn't spread out of Munich until 2020 is a success in itself: the failure got confined to a very small part of Europe, instead of getting deployed in the whole Bavaria, Germany or even Europe. Damages were limited, they had nearby neighbors to compare, they did the partial rollback (losing "only" 90 million instead of 900), analyzed the failures and fixed a lot of them just by going LibreOffice instead of OpenOffice.
The second attempt they had better outcome, and the German government agrees. Now they have the know-how from Munich, and can have a degree of confidence that things will be fine. You don't need an overwhelming success, just be on par with the Microsoft Office solution using free software, and you are already ahead. It's Microsoft who needs to be clearly ahead to justify the cost.
Still, it's better to have it limited to Germany while others watch for a year or two if it works as intended.
The second attempt they had better outcome, and the German government agrees. Now they have the know-how from Munich, and can have a degree of confidence that things will be fine. You don't need an overwhelming success, just be on par with the Microsoft Office solution using free software, and you are already ahead. It's Microsoft who needs to be clearly ahead to justify the cost.
Still, it's better to have it limited to Germany while others watch for a year or two if it works as intended.