History repeats itself
Reminds me of the recently failed experiment in Munich where all the city computers moved to Linux, and guess what, 10 years later they announce that they are moving back to Windows!
Open source makes it far to easy for maleficents to create backdoors that are not caught! (not saying that this is not possible in Windows but it is much more difficult for a perpetrator as they would to get the right person a job in the "windows team" before they can inject the code they need).
Anyway time will tell but history has a habit of repeating itself!