Munich reverted to Windows in 2017, then reverted back to Linux in 2020. it is expected that the 2017 rollback was a case of corruption and a waste of money. The first shift was allegedly explicitly against the wishes of many users.
Probably, I mean the arguments where supper questionable.
Like oh mail on my phone is not working, that is because mail is now run by Linux we must switch back ... but it wasn't, Mail was one a the few systems which didn't switch to Linux.
Or very questionable calculations about the price of buying some "customer support" (Linux IT Consulting).