I had the username @switzerland since 20.03.2006. Swiss tourism had another username since 17.10.2006. Now recently google gave my username away to swiss tourism without any notification. Their other username was fine for literally 20 years.

Worse, the app still showed my username for a long time meanwhile youtube.com/@Switzerland already showed that of swiss tourism (Schweiz Tourismus) and I was not aware of that. Hence, I lost it some months ago.

Why do I tell you? You might loose your username and you aren't even aware of it.