Due to increasing concerns over cyberattacks and malware, India’s Defence Ministry has decided to replace Microsoft’s OS with a locally made Ubuntu fork named Maya (meaning ‘deception’ in Sanskrit). Maya will have an interface similar to Windows to ease the transition, and an end-point detection and protection system called Chakravyuh. The three armed services are also expected to follow suit, with the Navy already having cleared the OS for deployment.
The Indian government has long had a policy to transfer all government systems to open-source software, with the Railways and the Bombay Stock Exchange having switched to Red Hat and educational institutions using distributions such as Debian-based BOSS and Ubuntu-based KITE.
On the one hand I agree, it’s not just the OS that’s replaced, it’s also the programs that run on it (unless they use cloud based apps, of course).
On the other hand, the Germany example you mentioned was 15 or so years ago. I imagine Linux has matured a lot since then.