The sabotage scenario is perhaps less likely than the alternative scenario of industrial and political espionage.
There are also practical advantages: the ability to fix a bug in-house instead of waiting for a technology giant from another continent.
> the ability to fix a bug in-house
Yes, but bureaucracies make this impossible. If you have worked at a bank before, you'll know how difficult it is to make a change to some in-house piece of software. And that's a bank, not a gov't institution. Think how much more friction there will be in the latter.
Less likely? This is exactly what happened earlier this year.
Here's an article from the same newspaper that showed up to me as "related" when browsing TFA:
https://www.heise.de/en/news/Criminal-Court-Microsoft-s-emai...